Name Size Creator Creation Date Labels Comment  
PDF File 1849141.pdf 418 kB Shaun Ewing Mar 15, 1932 00:00
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US-1849141-A // Transmission regulator system // Dutton Thomas D. // American Telephone & Telegraph
PDF File 1848222.pdf 633 kB Shaun Ewing Mar 08, 1932 00:00
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US-1848222-A // Producing musical sounds // Potter Ralph K. // American Telephone & Telegraph
PDF File 1848221.pdf 644 kB Shaun Ewing Mar 08, 1932 00:00
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US-1848221-A // Filter arrangement // Mccurdy Ralph G. // American Telephone & Telegraph
PDF File 1848220.pdf 729 kB Shaun Ewing Mar 08, 1932 00:00
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US-1848220-A // Energy control arrangement // Lindsay Russell H. // American Telephone & Telegraph
PDF File 1847151.pdf 577 kB Shaun Ewing Mar 01, 1932 00:00
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US-1847151-A // Transmitter of variably biased impulses // Watson Edward F. ; Hunt Arthur E. // American Telephone & Telegraph
PDF File 1847116.pdf 184 kB Shaun Ewing Mar 01, 1932 00:00
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US-1847116-A // Telephone substation set // Labaugh James M. // American Telephone & Telegraph
PDF File 1846516.pdf 3.31 MB Shaun Ewing Feb 23, 1932 00:00
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US-1846516-A // Telephone system // Haines William T. // American Telephone & Telegraph
PDF File 1846262.pdf 2.81 MB Shaun Ewing Feb 23, 1932 00:00
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US-1846262-A // Telephone system // Kittredge Linus E. // American Telephone & Telegraph
PDF File 1846261.pdf 5.21 MB Shaun Ewing Feb 23, 1932 00:00
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US-1846261-A // Telephone system // Kittredge Linus E. // American Telephone & Telegraph
PDF File 1845081.pdf 465 kB Shaun Ewing Feb 16, 1932 00:00
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US-1845081-A // Electrical protective system // Ferris Livingston P. // American Telephone & Telegraph
PDF File 1845034.pdf 507 kB Shaun Ewing Feb 16, 1932 00:00
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US-1845034-A // Signaling apparatus for recording systems // Bickelhaupt Carroll O. // American Telephone & Telegraph
PDF File 1845017.pdf 347 kB Shaun Ewing Feb 16, 1932 00:00
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US-1845017-A // Telephone signaling system // Edwards William H. // American Telephone & Telegraph
PDF File 1844887.pdf 277 kB Shaun Ewing Feb 09, 1932 00:00
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US-1844887-A // Method of and means for measuring time of propagation of wave fronts over circuits // Herman Joseph // American Telephone & Telegraph
PDF File 1844886.pdf 340 kB Shaun Ewing Feb 09, 1932 00:00
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US-1844886-A // Means for measuring time of propagation of wave fronts over circuits // Herman Joseph // American Telephone & Telegraph
PDF File 1843228.pdf 1.40 MB Shaun Ewing Feb 02, 1932 00:00
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US-1843228-A // Radio telephone and telegraph circuits // Herman Joseph ; Taylor Edmund R. ; Wright Sumner B. // American Telephone & Telegraph
PDF File 1843227.pdf 1.40 MB Shaun Ewing Feb 02, 1932 00:00
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US-1843227-A // Radio telephone and telegraph system // Herman Joseph // American Telephone & Telegraph
PDF File 1843189.pdf 1.02 MB Shaun Ewing Feb 02, 1932 00:00
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US-1843189-A // Radio telephone and telegraph system // Bailey Austin // American Telephone & Telegraph
PDF File 1842523.pdf 582 kB Shaun Ewing Jan 26, 1932 00:00
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US-1842523-A // Telegraph system // Hanley Frank H. // American Telephone & Telegraph
PDF File 1842496.pdf 453 kB Shaun Ewing Jan 26, 1932 00:00
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US-1842496-A // Mounting for books and the like // Jr. Richard Wagner, // American Telephone & Telegraph
PDF File 1842478.pdf 674 kB Shaun Ewing Jan 26, 1932 00:00
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US-1842478-A // Telegraph system // Rea Wilton T. // American Telephone & Telegraph
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