US1991723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing seal
Assignee: Fafnir Bearing Co
•
Filing: 1933-06-05
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Granted: 1935-02-19
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Expires: 1953-06-05
Abstract
No abstract record available.
Inventors
- 👤 William C Betz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:34
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/784; F16C33/7843; F16C33/7846; F16C33/785; F16C43/00; F16C43/04; F16C43/045; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2300/00; F16C2300/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49703; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/53; Y10T29/53104; Y10T29/53109
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) | 1938-02-18 | 1938-08-20 | 1939-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-02-18 | 1942-08-20 | 1943-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-02-18 | 1946-08-20 | 1947-02-19 | $7700.00 | Window Closed / Lapsed |