US2027356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of fluid pressure devices
Assignee: Individual
•
Filing: 1934-03-13
•
Granted: 1936-01-07
•
Expires: 1954-03-13
Abstract
No abstract record available.
Inventors
- 👤 Erling Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:14
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/10; F01B3/103; F01B3/106; F01B1/00; F01B1/06; F01B1/0675; F01B1/0686; F01B1/0689
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) | 1939-01-06 | 1939-07-08 | 1940-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-01-06 | 1943-07-08 | 1944-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-01-06 | 1947-07-08 | 1948-01-07 | $7700.00 | Window Closed / Lapsed |