US2628837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrowhead with resilient arms
Assignee: Individual
•
Filing: 1947-05-26
•
Granted: 1953-02-17
•
Expires: 1967-05-26
Abstract
No abstract record available.
Inventors
- 👤 Clifford J Zwickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:37
CPC Classifications
F; F42; F42B; F42B6/00; F42B6/02; F42B6/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1162200A
Cited
US1604713A
Cited
US1725760A
Cited
FR728308A
Cited
US1913810A
Cited
US2137014A
Cited
GB510193A
Cited
US2289284A
Cited
US2277743A
Cited
US2467838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |