US2080750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bearings
Assignee: Individual
•
Filing: 1934-03-02
•
Granted: 1937-05-18
•
Expires: 1954-03-02
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:21
CPC Classifications
B; B21; B21K; B21K25/00; B21K1/00; B21K1/04; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49579; Y10T29/49636; Y10T29/49707; Y10T29/49709; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/49943
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) | 1940-05-17 | 1940-11-16 | 1941-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-17 | 1944-11-16 | 1945-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-17 | 1948-11-16 | 1949-05-18 | $7700.00 | Window Closed / Lapsed |