US2467543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid seal
Assignee: Crane Packing Co
•
Filing: 1945-09-20
•
Granted: 1949-04-19
•
Expires: 1965-09-20
Abstract
No abstract record available.
Inventors
- 👤 Charles F Voytech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1931723A
Cited
US2200413A
Cited
US2195774A
Cited
FR874519A
Cited
US2347118A
Cited
US2365065A
Cited
US2379868A
Cited
US2440394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |