Patent US3326520A successfully refreshed from Google Patents.
US3326520A
Expired / Lapsed
US
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Resilient needle valve element
Assignee: Industrial Electronic Rubber Co
•
Filing: 1964-03-25
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Granted: 1967-06-20
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Expires: 1984-03-25
Abstract
No abstract record available.
Inventors
- 👤 Gordon B Guenther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:33
CPC Classifications
F; F02; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4328; F02M2700/4333; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49417
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2876982A
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US2920861A
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US3090108A
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US3090596A
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US3087705A
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US3191905A
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US3236496A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |