Patent US1677841A successfully refreshed from Google Patents.
US1677841A
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Method of making ball-race elements
Assignee: JOHN L MCMICHAEL
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Filing: 1923-01-18
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Granted: 1928-07-17
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Expires: 1943-01-18
Abstract
No abstract record available.
Inventors
- 👤 Budd G Nice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:22
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/10; B21D53/12; F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/588; F16C33/64; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49689
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) | 1931-07-17 | 1932-01-16 | 1932-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-07-17 | 1936-01-16 | 1936-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-07-17 | 1940-01-16 | 1940-07-17 | $7700.00 | Window Closed / Lapsed |