Patent information:
| Patent: | Utility 362,477 |
| Patented: | May 3, 1887 |
| Applied: | December 23, 1886 |
| Title: | Electric Police Call Alarm Box |
| Description: | Police call alarm box with a key |
| Category: | Alarm Box |
| Assigned to: | 3/4 to Hern, Prendergast, Oakman |
Patentee Information:
| COUGHLIN, John J. | Boston, MA |
Class and subclass information:
| Class: | 340 | COMMUNICATIONS: ELECTRICAL |
| Subclass: | 294 | |
| Class: | 340 | COMMUNICATIONS: ELECTRICAL |
| Subclass: | 288 | |
| Class: | 340 | COMMUNICATIONS: ELECTRICAL |
| Subclass: | 297 | |
| Class: | 340 | COMMUNICATIONS: ELECTRICAL |
| Subclass: | 301 |
Known specimens:
| None known |
Drawings:
Page 1 |
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Page 3 |