Patent US2987006A successfully refreshed from Google Patents.
US2987006A
Expired / Lapsed
US
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Rotating seals for use with high pressure liquid
Assignee: Unipat AG
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Filing: 1957-05-07
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Granted: 1961-06-06
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Expires: 1977-05-07
Abstract
No abstract record available.
Inventors
- 👤 Eric H Bowers
- 👤 Thoma Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:33
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0041; F04; F04B; F04B53/00; F04B53/10; F04B53/1037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1163849A
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US2214268A
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US2284169A
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US2508309A
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US2749844A
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US2676548A
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US2761712A
Cited
US2754140A
Cited
US2760637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |