US2707928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ship's hatch and cover
Assignee: Individual
•
Filing: 1951-01-09
•
Granted: 1955-05-10
•
Expires: 1971-01-09
Abstract
No abstract record available.
Inventors
- 👤 Valdemar C Farrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:22
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12; B63B19/26
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |