US2863288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pressure control means for air turbine drive systems
Assignee: Jack and Heintz Inc
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Filing: 1954-11-19
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Granted: 1958-12-09
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Expires: 1974-11-19
Abstract
No abstract record available.
Inventors
- 👤 Cecil G Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:39
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/32; F02C6/00; F02C6/04; F02C6/06; F02C6/08; F04; F04D; F04D27/00; F04D27/02
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |