US2807973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing crankshafts automatically
Assignee: RK Le Blond Machine Tool Co
•
Filing: 1955-05-17
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Granted: 1957-10-01
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Expires: 1975-05-17
Abstract
No abstract record available.
Inventors
- 👤 Walter H Meyer
- 👤 Harold J Siekmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:04
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/18; Y; Y10; Y10T; Y10T29/00; Y10T29/17; Y10T29/51; Y10T29/5196; Y10T408/00; Y10T408/05; Y10T408/16; Y10T408/17; Y10T408/173; Y10T408/52; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2174; Y10T82/00; Y10T82/19; Y10T82/25; Y10T82/2514
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2020406A
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US2014225A
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US2421147A
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US2473108A
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US2643570A
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US2623429A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |