US2465560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leakproof cylinder
Assignee: Individual
•
Filing: 1943-12-24
•
Granted: 1949-03-29
•
Expires: 1963-12-24
Abstract
No abstract record available.
Inventors
- 👤 Hans G Warnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:02
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1085818A
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FR465539A
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US1149114A
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US1377981A
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US1515702A
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FR578476A
Cited
US1744241A
Cited
US1928368A
Cited
US1924888A
Cited
US1993961A
Cited
FR763558A
Cited
FR763351A
Cited
US2178490A
Cited
US2200305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |