US2799238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hatch cover
Assignee: Individual
•
Filing: 1953-11-17
•
Granted: 1957-07-16
•
Expires: 1973-11-17
Abstract
No abstract record available.
Inventors
- 👤 George E Suderow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:15
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12; B63B19/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1158946A
Cited
GB158323A
Cited
US2194012A
Cited
US2256087A
Cited
US2656810A
Cited
DE836608C
Cited
FR1022796A
Cited
US2707928A
Cited
US2697998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |