US2737879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pressure regulator
Assignee: Individual
•
Filing: 1953-02-05
•
Granted: 1956-03-13
•
Expires: 1973-02-05
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Cooke
- 👤 Merton D Mears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:24
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0173; G05D16/00; G05D16/028; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US101972A
Cited
US1508813A
Cited
GB218170A
Cited
US1708310A
Cited
US2388253A
Cited
US2599075A
Cited
US2579395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |