Patent US2879868A successfully refreshed from Google Patents.
US2879868A
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US
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Mechanical unit comprising a rotaryseal and a timing device
Assignee: Fawick Corp
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Filing: 1955-04-01
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Granted: 1959-03-31
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Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 John V Eakin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:07
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/10; F; F16; F16D; F16D67/00; F16D67/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1869085A
Cited
US2213000A
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US2559195A
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US2469588A
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US2585234A
Cited
US2697470A
Cited
US2747714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |