Patent US2540688A successfully refreshed from Google Patents.
US2540688A
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US
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Method of manufacturing bearings
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1947-10-03
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Granted: 1951-02-06
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Expires: 1967-10-03
Abstract
No abstract record available.
Inventors
- 👤 Richard J Novy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:04
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/06; B21K1/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US616764A
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US756141A
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US935659A
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US1004992A
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US1237423A
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US1766098A
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US2210132A
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US2195749A
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US2350854A
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US2446515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |