US2223799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machining method of the races of ball bearings
Assignee: FIRM ROULEMENTS A BILLES MINIA
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Filing: 1938-08-29
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Granted: 1940-12-03
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Expires: 1958-08-29
Abstract
No abstract record available.
Inventors
- 👤 Annen Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:25
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/04; F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/64; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C19/14; F16C19/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49689; Y10T29/49703; Y10T29/53; Y10T29/53104; Y10T29/53109
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) | 1943-12-03 | 1944-06-03 | 1944-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-03 | 1948-06-03 | 1948-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-03 | 1952-06-03 | 1952-12-03 | $7700.00 | Window Closed / Lapsed |