Patent US1212707A successfully refreshed from Google Patents.
Patent US1331311A successfully refreshed from Google Patents.
US1331311A
Expired / Lapsed
US
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Flexible power-transmitting device
Assignee: Individual
•
Filing: 1919-05-16
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Granted: 1920-02-17
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Expires: 1939-05-16
Abstract
No abstract record available.
Inventors
- 👤 Carl H Au
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:25
CPC Classifications
F; F16; F16C; F16C1/00; F16C1/10; F16C1/20; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/20426; Y10T74/20456
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) | 1923-02-16 | 1923-08-18 | 1924-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-02-16 | 1927-08-18 | 1928-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-02-16 | 1931-08-18 | 1932-02-17 | $7700.00 | Window Closed / Lapsed |