US2075812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and control therefor
Assignee: BALDWIN SOUTHWARK CORP
•
Filing: 1934-07-20
•
Granted: 1937-04-06
•
Expires: 1954-07-20
Abstract
No abstract record available.
Inventors
- 👤 Kerr Samuel Logan
- 👤 Greig Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:13
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/12; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/8593; Y10T137/86389; Y10T137/86405
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) | 1940-04-05 | 1940-10-05 | 1941-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-05 | 1944-10-05 | 1945-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-05 | 1948-10-05 | 1949-04-06 | $7700.00 | Window Closed / Lapsed |