Martin; Adolf H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Martin; Adolf H..The latest application filed is for "indicator panel for elevator cars having an emergency calling device door handle with information and operating aids".
- Martin; Adolf H. - Glenview IL
| Patent | Date |
|---|---|
| Indicator panel for elevator cars having an emergency calling device door handle with information and operating aids Grant 5,390,766 - Martin February 21, 1 | 1995-02-21 |
| Combined face plate and push button actuator of controlling an elevator Grant D339,543 - Martin September 21, 1 | 1993-09-21 |
| Guide bar for an elevator door Grant 5,174,675 - Martin December 29, 1 | 1992-12-29 |
| Vandal resistant push button assembly Grant 4,822,963 - Martin April 18, 1 | 1989-04-18 |
| Push button assembly having an actuator subassembly fixed to the innerside of a face plate Grant 4,742,198 - Martin , et al. May 3, 1 | 1988-05-03 |
| Key switch having cooperable cams which translate rotary motion to rectilinear Grant 4,689,456 - Martin August 25, 1 | 1987-08-25 |
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