US2544990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission
Assignee: Vickers Inc
•
Filing: 1947-01-04
•
Granted: 1951-03-13
•
Expires: 1967-01-04
Abstract
No abstract record available.
Inventors
- 👤 Ferris T Harrington
- 👤 Joseph A Martin
- 👤 Gordon R Elliott
- 👤 Leslie W Haisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:22
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/06; F15B13/08; F15B13/0803; F15B13/0807; F15B13/0814; F15B1/00; F15B1/26; F15B13/04; F15B13/0878; F15B13/0885; F15B13/0892
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US92872A
Cited
US173167A
Cited
US304219A
Cited
US351538A
Cited
US360748A
Cited
US480068A
Cited
US740221A
Cited
US813899A
Cited
GB191011818A
Cited
US1050905A
Cited
US1245691A
Cited
US1273618A
Cited
US1637951A
Cited
US1666178A
Cited
US1989900A
Cited
US1910766A
Cited
US2057087A
Cited
US2141170A
Cited
US2146166A
Cited
US2186440A
Cited
US2247140A
Cited
US2247141A
Cited
US2276358A
Cited
US2210144A
Cited
US2301122A
Cited
US2293906A
Cited
US2384447A
Cited
US2394154A
Cited
US2362944A
Cited
US2415258A
Cited
US2361747A
Cited
US2369282A
Cited
US2369440A
Cited
US2397042A
Cited
US2440948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |