US2909911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical spring flexible coupling
Assignee: Individual
•
Filing: 1957-06-17
•
Granted: 1959-10-27
•
Expires: 1977-06-17
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Spaetgens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/64; F16D3/66; Y; Y10; Y10S; Y10S464/00; Y10S464/90
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE172514C
Cited
US1194336A
Cited
US1013925A
Cited
US1088241A
Cited
US1498072A
Cited
US1445716A
Cited
GB195300A
Cited
GB503284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |