Patent US3448307A successfully refreshed from Google Patents.
US3448307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bell striker reciprocating motor
Assignee: Edwards Co Inc
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Filing: 1966-09-06
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Granted: 1969-06-03
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Expires: 1986-09-06
Abstract
No abstract record available.
Inventors
- 👤 Rudolph M Duris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:03
CPC Classifications
G; G10; G10K; G10K1/00; G10K1/06; G10K1/062; G10K1/063; G10K1/064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1436639A
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US2205189A
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US2383411A
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US2561355A
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US2726342A
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US3018418A
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US3139565A
Cited
CH421297A
Cited
US3274525A
Cited
US3331042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |