US2574492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary turbine type hydraulic coupling
Assignee: Individual
•
Filing: 1948-05-14
•
Granted: 1951-11-13
•
Expires: 1968-05-14
Abstract
No abstract record available.
Inventors
- 👤 David S Nowak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
F; F16; F16D; F16D33/00; F16D33/02; F16D33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304566A
Cited
US843874A
Cited
US1095132A
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US1927040A
Cited
US1993741A
Cited
US2382034A
Cited
US2368279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |