US3498186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple lobed chamber air motor
Assignee: Individual
•
Filing: 1967-05-19
•
Granted: 1970-03-03
•
Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 Oren Van Northcutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:29
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2899935A
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US868841A
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US1048453A
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US1434716A
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US2730077A
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US3245483A
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US3230840A
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US3292955A
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US3326240A
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US3299781A
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US3373824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |