US2424543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive device
Assignee: Westinghouse Electric Corp
•
Filing: 1945-02-09
•
Granted: 1947-07-29
•
Expires: 1965-02-09
Abstract
No abstract record available.
Inventors
- 👤 Frank L Alben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:50
CPC Classifications
B; B61; B61C; B61C9/00; B61C9/28; B61C9/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US804638A
Cited
US1132727A
Cited
CH76762A
Cited
US1367625A
Cited
US1572958A
Cited
CH124469A
Cited
US2029981A
Cited
US2093389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |