US2453791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid clutch, governor controlled
Assignee: International Motors LLC
•
Filing: 1943-12-31
•
Granted: 1948-11-16
•
Expires: 1963-12-31
Abstract
No abstract record available.
Inventors
- 👤 William H Harstick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:54
CPC Classifications
B; B04; B04B; B04B9/00; B04B9/08; F; F16; F16D; F16D33/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190209943A
Cited
US810975A
Cited
US1760775A
Cited
US2106609A
Cited
GB443892A
Cited
US2182049A
Cited
US2195561A
Cited
US2299049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |