US2473098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hatch cover operating device
Assignee: Individual
•
Filing: 1946-02-13
•
Granted: 1949-06-14
•
Expires: 1966-02-13
Abstract
No abstract record available.
Inventors
- 👤 Clarence R Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/12; E05C17/20; B; B60; B60H; B60H1/00; B60H1/24; B60H1/26; B60H1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1473655A
Cited
US1567671A
Cited
US1574777A
Cited
US2314649A
Cited
US2231885A
Cited
US2360533A
Cited
US2368824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |