US2548874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retaining device
Assignee: Westinghouse Electric Corp
•
Filing: 1945-10-10
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Granted: 1951-04-17
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Expires: 1965-10-10
Abstract
No abstract record available.
Inventors
- 👤 Daniel P Darwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:54
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18; F16B21/186; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/063; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C23/00; F16C23/06; F16C23/08; F16C23/082; F16C23/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1091959A
Cited
US1134520A
Cited
GB457087A
Cited
GB481970A
Cited
US2416852A
Cited
US2443614A
Cited
US2401087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |