US2653837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-pressure rotary seal with o ring
Assignee: Crane Packing Co
•
Filing: 1948-05-27
•
Granted: 1953-09-29
•
Expires: 1968-05-27
Abstract
No abstract record available.
Inventors
- 👤 Charles F Voytech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:32
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22116E
Cited
US2037144A
Cited
US2250311A
Cited
US2321871A
Cited
US2365046A
Cited
US2429953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |