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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1689030.pdf | 94 kB | Shaun Ewing | Oct 23, 1928 00:00 |
|
US-1689030-A // Acoustic diaphragm // Holland Newman H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 94 kB | Shaun Ewing | Oct 23, 1928 00:00 | US-1689030-A // Acoustic diaphragm // Holland Newman H. // Bell Telephone Labor Inc | ||||
| PDF File 1745612.pdf | 88 kB | Shaun Ewing | Feb 04, 1930 00:00 |
|
US-1745612-A // Nonmagnetic material // Elmen Gustaf W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 88 kB | Shaun Ewing | Feb 04, 1930 00:00 | US-1745612-A // Nonmagnetic material // Elmen Gustaf W. // Bell Telephone Labor Inc |
