US2874534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary engine and supercharger
Assignee: Individual
•
Filing: 1956-06-29
•
Granted: 1959-02-24
•
Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 Canazzi Henry Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:36
CPC Classifications
F; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33; F02M2700/331; F02M2700/336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1585453A
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US2060187A
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US2228637A
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US2506142A
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US2504230A
Cited
US2553548A
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US2622787A
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US2615436A
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US2753809A
Cited
US2796029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |