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:
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:
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Drawings:
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