US2779645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double acting high pressure seal
Assignee: Cleveland Pneumatic Tool Co
•
Filing: 1954-10-14
•
Granted: 1957-01-29
•
Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 Walter H Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:44
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/005; F16J1/006; Y; Y10; Y10S; Y10S277/00; Y10S277/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1725836A
Cited
US1928259A
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US2308149A
Cited
US2399550A
Cited
US2417107A
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US2647769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |