Name Size Creator Creation Date Labels Comment  
PDF File 1007344.pdf 654 kB Shaun Ewing Oct 31, 1911 00:00
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US-1007344-A // Telephone-system signaling apparatus. // John Erickson // Automatic Electric Co
PDF File 1036818.pdf 337 kB Shaun Ewing Aug 27, 1912 00:00
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US-1036818-A // Line-protective device. // John Erickson // Automatic Electric Co
PDF File 1051894.pdf 1.71 MB Shaun Ewing Feb 04, 1913 00:00
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US-1051894-A // Special-call telephone system. // Alexander E. Keith // Automatic Electric Co
PDF File 1062387.pdf 1.58 MB Shaun Ewing May 20, 1913 00:00
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US-1062387-A // Measured-service telephone system. // John Erickson // Automatic Electric Co
PDF File 1064719.pdf 2.06 MB Shaun Ewing Jun 17, 1913 00:00
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US-1064719-A // Telephone trunking system. // Edward D. Fales // Automatic Electric Co
PDF File 1075007.pdf 1.13 MB Shaun Ewing Oct 07, 1913 00:00
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US-1075007-A // Telephone system. // John G. Blessing // Automatic Electric Co
PDF File 1077225.pdf 315 kB Shaun Ewing Oct 28, 1913 00:00
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US-1077225-A // Telephone-system station instrument. // Alexander E. Keith // Automatic Electric Co
PDF File 1078685.pdf 2.45 MB Shaun Ewing Nov 18, 1913 00:00
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US-1078685-A // Telephone-exchange trunking system. // Alexander E. Keith // Automatic Electric Co
PDF File 1078690.pdf 1.62 MB Shaun Ewing Nov 18, 1913 00:00
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US-1078690-A // Automatic telephone system. // Frank Newforth, Jr. // Automatic Electric Co
PDF File 1082310.pdf 389 kB Shaun Ewing Dec 23, 1913 00:00
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US-1082310-A // Relay. // John Erickson // Automatic Electric Co
PDF File 1101854.pdf 3.23 MB Shaun Ewing Jun 30, 1914 00:00
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US-1101854-A // Automatic trunking system. // Alexander E. Keith // Automatic Electric Co
PDF File 1104451.pdf 1.70 MB Shaun Ewing Jul 21, 1914 00:00
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US-1104451-A // Telephone automatic trunk-selecting system. // Michael Setter // Automatic Electric Co
PDF File 1110071.pdf 1.90 MB Shaun Ewing Sept 08, 1914 00:00
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US-1110071-A // Automatic trunking system. // Edward A. Mellinger // Automatic Electric Co
PDF File 1112994.pdf 486 kB Shaun Ewing Oct 06, 1914 00:00
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US-1112994-A // Speed-indicator for calling devices. // John Erickson // Automatic Electric Co
PDF File 1113319.pdf 302 kB Shaun Ewing Oct 13, 1914 00:00
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US-1113319-A // Line protective device. // John Erickson // Automatic Electric Co
PDF File 1113354.pdf 926 kB Shaun Ewing Oct 13, 1914 00:00
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US-1113354-A // Automatic trunking system. // Alexander E. Keith // Automatic Electric Co
PDF File 1113649.pdf 1.57 MB Shaun Ewing Oct 13, 1914 00:00
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US-1113649-A // Non-interfering extension or party-line telephone system. // Leo Keller // Automatic Electric Co
PDF File 1113937.pdf 862 kB Shaun Ewing Oct 13, 1914 00:00
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US-1113937-A // Telephone-testing system. // Edward A. Mellinger // Automatic Electric Co
PDF File 1115324.pdf 975 kB Shaun Ewing Oct 27, 1914 00:00
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US-1115324-A // Telephone release-insuring means. // Talbot G. Martin // Automatic Electric Co
PDF File 1118925.pdf 353 kB Shaun Ewing Dec 01, 1914 00:00
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US-1118925-A // Harmonic ringer. // John Erickson // Automatic Electric Co
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