US1679772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bearings
Assignee: Cleveland Graphite Bronze Co
•
Filing: 1927-01-03
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Granted: 1928-08-07
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Expires: 1947-01-03
Abstract
No abstract record available.
Inventors
- 👤 Carl W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:24
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49648; Y10T29/49657; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32737; Y10T403/32754; Y10T403/32771
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) | 1931-08-07 | 1932-02-06 | 1932-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-07 | 1936-02-06 | 1936-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-07 | 1940-02-06 | 1940-08-07 | $7700.00 | Window Closed / Lapsed |