US2003292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for regulating constant volume explosion chambers
Assignee: HOLZWARTH GAS TURBINE CO
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Filing: 1931-10-21
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Granted: 1935-06-04
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Expires: 1951-10-21
Abstract
No abstract record available.
Inventors
- 👤 Holzwarth Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:36
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86509; Y10T137/86517; Y10T137/86533; Y10T137/86541; Y10T137/86911; Y10T137/87096; Y10T137/87121; Y10T137/87129; Y10T137/87137; Y10T137/87249; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-06-03 | 1938-12-03 | 1939-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-06-03 | 1942-12-03 | 1943-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-06-03 | 1946-12-03 | 1947-06-04 | $7700.00 | Window Closed / Lapsed |