Patent JPS5893477A successfully refreshed from Google Patents.
US1970652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable angle gear drive
Assignee: Individual
•
Filing: 1933-09-12
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Granted: 1934-08-21
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Expires: 1953-09-12
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Hammitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:18
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/02; F; F16; F16H; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/20; F16H1/22; B63H23/32; B63H23/34; B63H2023/348; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19502; Y10T74/19521; Y10T74/19642; Y10T74/19688
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) | 1937-08-20 | 1938-02-19 | 1938-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-08-20 | 1942-02-19 | 1942-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-08-20 | 1946-02-19 | 1946-08-21 | $7700.00 | Window Closed / Lapsed |