US2955652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hatchway covers
Assignee: Whitnash PLC
•
Filing: 1959-02-16
•
Granted: 1960-10-11
•
Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 Senior William James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:26
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12; B63B19/14; B63B19/19; B63B19/197
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE24238E
Cited
US2770297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |