Patent US3503005A successfully refreshed from Google Patents.
US1611981A
Expired / Lapsed
US
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Gear mechanism
Assignee: BERNARD L ENGELKE
•
Filing: 1922-03-23
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Granted: 1926-12-28
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Expires: 1942-03-23
Abstract
No abstract record available.
Inventors
- 👤 Walter E Amberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:45
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/32; F16H1/321
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-12-27 | 1930-06-28 | 1930-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-12-27 | 1934-06-28 | 1934-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-12-27 | 1938-06-28 | 1938-12-28 | $7700.00 | Window Closed / Lapsed |