Patent US1431183A successfully refreshed from Google Patents.
US1431183A
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Method of making antifriction elements
Assignee: STANDARD STEEL AND BEARINGS IN
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Filing: 1920-04-08
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Granted: 1922-10-10
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Expires: 1940-04-08
Abstract
No abstract record available.
Inventors
- 👤 Lea W Rockwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:40
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49694
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) | 1925-10-09 | 1926-04-10 | 1926-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-10-09 | 1930-04-10 | 1930-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-10-09 | 1934-04-10 | 1934-10-10 | $7700.00 | Window Closed / Lapsed |