Patent US2564211A successfully refreshed from Google Patents.
US2564211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed coupling
Assignee: Individual
•
Filing: 1949-10-12
•
Granted: 1951-08-14
•
Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas M O'hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:14
CPC Classifications
F; F16; F16H; F16H33/00; F16H33/02; F16H33/04; F16H33/08; F16H33/14; F16H33/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1551692A
Cited
FR564111A
Cited
US1551695A
Cited
US1720236A
Cited
US1741858A
Cited
US1882181A
Cited
US2021460A
Cited
US2491202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |