US2643570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple station center drive crankshaft lathe
Assignee: RK Le Blond Machine Tool Co
•
Filing: 1950-03-13
•
Granted: 1953-06-30
•
Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 Harold J Siekmann
- 👤 Walter R Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:33
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/18; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2514; Y10T82/2516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2069107A
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US2211722A
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US2221049A
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US2249241A
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US2356226A
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US2554664A
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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) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |