US2991108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hatch cover holddown dog
Assignee: Sea Land Service Inc
•
Filing: 1957-07-03
•
Granted: 1961-07-04
•
Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Keith W Tantlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:14
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12; B63B19/24; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/202; Y10T292/68; Y10T292/705; Y10T292/707
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US783338A
Cited
US1007639A
Cited
US1350713A
Cited
US1400953A
Cited
US1482049A
Cited
US1610342A
Cited
GB246981A
Cited
US2583053A
Cited
US2791455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |