Ackermann; Walter Thomas
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ackermann; Walter Thomas.The latest application filed is for "slider for invisible-type slide fastener".
- Ackermann; Walter Thomas - Watertown CT
| Patent | Date |
|---|---|
| Slider for invisible-type slide fastener Grant 4,055,876 - Ackermann , et al. November 1, 1 | 1977-11-01 |
| Dimming means for a lighting system Grant 3,916,249 - Ackermann October 28, 1 | 1975-10-28 |
| Automatically Feeding Lead Pencil Grant 3,850,531 - Ackermann November 26, 1 | 1974-11-26 |
| Guide For Sewing Invisible Fasteners Grant 3,703,148 - Ackermann , et al. November 21, 1 | 1972-11-21 |
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