US2902303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable shaft collars
Assignee: Welex Inc
•
Filing: 1955-11-09
•
Granted: 1959-09-01
•
Expires: 1975-11-09
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:15
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18; F16B21/186
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190800417A
Cited
US1161078A
Cited
US1409320A
Cited
USRE18144E
Cited
US1994617A
Cited
US2577009A
Cited
US2567543A
Cited
FR980814A
Cited
DE801353C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |