Patent US2729185A successfully refreshed from Google Patents.
US2729185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Watertight closing device for doors, hatches, or similar elements
Assignee: Individual
•
Filing: 1951-10-23
•
Granted: 1956-01-03
•
Expires: 1971-10-23
Abstract
No abstract record available.
Inventors
- 👤 Kummerman Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:42
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12; B63B19/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1735329A
Cited
US1821595A
Cited
US2156635A
Cited
US2093362A
Cited
GB466019A
Cited
US2121386A
Cited
US2256087A
Cited
US2590985A
Cited
GB611848A
Cited
US2633613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |