US2419919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine type dual hydraulic coupling
Assignee: Individual
•
Filing: 1944-02-04
•
Granted: 1947-04-29
•
Expires: 1964-02-04
Abstract
No abstract record available.
Inventors
- 👤 Sinclair Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:21
CPC Classifications
F; F16; F16D; F16D33/00; F16D33/06; F16D33/08; F16D33/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1768938A
Cited
US1859607A
Cited
US1987985A
Cited
DE615344C
Cited
US2133029A
Cited
US2151075A
Cited
US2284362A
Cited
US2322577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-28 | 1950-10-28 | 1951-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-28 | 1954-10-28 | 1955-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-28 | 1958-10-28 | 1959-04-29 | $7700.00 | Window Closed / Lapsed |