US3152808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary seal with wedge sealing element
Assignee: JOHN CRANE HOUDAILLE Inc A CORP OF
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Filing: 1959-11-20
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Granted: 1964-10-13
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Expires: 1979-11-20
Abstract
No abstract record available.
Inventors
- 👤 Tankus Harry
- 👤 Vance E Vorhees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:19
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2158297A
Cited
US2288164A
Cited
US2365046A
Cited
US2419588A
Cited
US2670973A
Cited
US2964340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |