US2231696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas pressure booster system
Assignee: Fisher Governor Co
•
Filing: 1938-12-28
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Granted: 1941-02-11
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Expires: 1958-12-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R D Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/163; G05D16/04; G05D16/06; G05D16/063; G05D16/0675; G05D16/0683; G05D16/0691; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7754; Y10T137/7755; Y10T137/7756; Y10T137/7757; Y10T74/00; Y10T74/20; Y10T74/20558; Y10T74/2057; Y10T74/20576; Y10T74/20582; Y10T74/206
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) | 1944-02-11 | 1944-08-12 | 1945-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-11 | 1948-08-12 | 1949-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-11 | 1952-08-12 | 1953-02-11 | $7700.00 | Window Closed / Lapsed |