Patent US2235975A successfully refreshed from Google Patents.
Patent US3481149A successfully refreshed from Google Patents.
US3481149A
Expired / Lapsed
US
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Gas generator
Assignee: General Pneumatics Corp
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Filing: 1968-05-09
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Granted: 1969-12-02
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Expires: 1988-05-09
Abstract
No abstract record available.
Inventors
- 👤 Michael Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:39
CPC Classifications
F; F17; F17C; F17C9/00; F17C9/02; C; C01; C01B; C01B32/00; C01B32/50; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0311; F17C2205/0314; F17C2205/0323; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2225/00; F17C2225/01; F17C2225/0107; F17C2225/0123; F17C2227/00; F17C2227/03; F17C2227/0367; F17C2227/0388; F17C2227/0393
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |