US1651237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator
Assignee: Individual
•
Filing: 1921-03-29
•
Granted: 1927-11-29
•
Expires: 1941-03-29
Abstract
No abstract record available.
Inventors
- 👤 James M Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; G05D16/0658; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154; Y10T137/6157; Y10T137/7722; Y10T137/7723; Y10T137/7731
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) | 1930-11-28 | 1931-05-30 | 1931-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-11-28 | 1935-05-30 | 1935-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-11-28 | 1939-05-30 | 1939-11-29 | $7700.00 | Window Closed / Lapsed |