US3448917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air jet pump
Assignee: JETDRAFT Inc
•
Filing: 1967-05-09
•
Granted: 1969-06-10
•
Expires: 1987-05-09
Abstract
No abstract record available.
Inventors
- 👤 William R Dewey
- 👤 Howard W Locker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:35
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US569804A
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US2923959A
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US739806A
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US1172450A
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US1386050A
Cited
US1407011A
Cited
US1426518A
Cited
US1533898A
Cited
US1527849A
Cited
US1653980A
Cited
US3371618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |