US1428620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for balancing crank shafts and the like
Assignee: JEFFERSON FORGE PRODUCTS CO
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Filing: 1921-02-14
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Granted: 1922-09-12
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Expires: 1941-02-14
Abstract
No abstract record available.
Inventors
- 👤 Carl L Wilber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
F; F16; F16C; F16C3/00; F16C3/04; F16C3/20; F16F; F16F15/00; F16F15/28; F16F15/283; Y; Y10; Y10S; Y10S29/00; Y10S29/901; Y10T; Y10T29/00; Y10T29/17; Y10T29/49; Y10T29/49762; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2183; Y10T82/00; Y10T82/27
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) | 1925-09-11 | 1926-03-13 | 1926-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-09-11 | 1930-03-13 | 1930-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-09-11 | 1934-03-13 | 1934-09-12 | $7700.00 | Window Closed / Lapsed |