Patent US3036874A successfully refreshed from Google Patents.
US3036874A
Expired / Lapsed
US
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Pressure responsive plunger ring
Assignee: LEO W FAGG
•
Filing: 1959-09-21
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Granted: 1962-05-29
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Expires: 1979-09-21
Abstract
No abstract record available.
Inventors
- 👤 Chester L Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:34
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/28; F04; F04B; F04B53/00; F04B53/14; F04B53/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2240780A
Cited
US2344687A
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US2549818A
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US2633808A
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US2687335A
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US2743333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |