US2793889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston rod seal
Assignee: Houdaille Industries Inc
•
Filing: 1951-04-12
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Granted: 1957-05-28
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Expires: 1971-04-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Elbert Leland Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:31
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/36; F16F9/362; F16F9/364; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3232
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1287285A
Cited
GB408870A
Cited
US2182034A
Cited
US2443332A
Cited
US2517717A
Cited
US2537425A
Cited
US2574209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |