US2727764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing seal
Assignee: FEDERAL BEARINGS CO Inc
•
Filing: 1951-05-17
•
Granted: 1955-12-20
•
Expires: 1971-05-17
Abstract
No abstract record available.
Inventors
- 👤 Don N Covert
- 👤 Ray L Denney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:24
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/784; F16C33/7843; F16C33/7853
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB508640A
Cited
US2252554A
Cited
US2281010A
Cited
US2310607A
Cited
US2336913A
Cited
GB622418A
Cited
US2621091A
Cited
FR978288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |