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US2572021A
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Bearing surface
Assignee: Individual
•
Filing: 1946-01-16
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Granted: 1951-10-23
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Expires: 1966-01-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Folz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:50
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/106; F16C33/1065; F16C33/103; F16C2240/00; F16C2240/40; F16C2240/42; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49702
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1184406A
Cited
DE339649C
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US1600961A
Cited
US1847524A
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US1877495A
Cited
US1961029A
Cited
US2248530A
Cited
US2433457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |