Patent US4928841A successfully refreshed from Google Patents.
Patent US2140818A successfully refreshed from Google Patents.
US2140818A
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Antifriction bearing
Assignee: AETNA BALL BEARING Manufacturing Co
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Filing: 1937-11-22
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Granted: 1938-12-20
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Expires: 1957-11-22
Abstract
No abstract record available.
Inventors
- 👤 Louis H Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:04
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/12; F16D23/14; F16C; F16C19/00; F16C19/02; F16C19/10; F16C33/00; F16C33/72; F16C33/76; F16C33/761; F16C2361/00; F16C2361/43; F16C33/30; F16C33/38; F16C33/41; F16C33/412; F16C33/66; F16C33/6603; F16C33/6607; F16D2300/00; F16D2300/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-12-19 | 1942-06-20 | 1942-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-19 | 1946-06-20 | 1946-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-19 | 1950-06-20 | 1950-12-20 | $7700.00 | Window Closed / Lapsed |