US2441981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing driver
Assignee: PARKER PATTERN AND FOUNDRY Co
•
Filing: 1943-11-01
•
Granted: 1948-05-25
•
Expires: 1963-11-01
Abstract
No abstract record available.
Inventors
- 👤 Earl E Stelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:25
CPC Classifications
B; B25; B25B; B25B27/00; F; F16; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/067; F16C19/00; F16C19/02; F16C19/04; F16C19/06; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T29/5393
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US278612A
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US292521A
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US524326A
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US663124A
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US1069539A
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US1280233A
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US1395587A
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US1704442A
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US1740590A
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US2038124A
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US2279649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |