US2473572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic servo operator
Assignee: RK Le Blond Machine Tool Co
•
Filing: 1946-12-11
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Granted: 1949-06-21
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Expires: 1966-12-11
Abstract
No abstract record available.
Inventors
- 👤 Nelson D Cooper
- 👤 Eugene A Ruchty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:47
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/36; B23B5/40; Y; Y10; Y10S; Y10S60/00; Y10S60/911; Y10T; Y10T409/00; Y10T409/30; Y10T409/303416; Y10T409/303472; Y10T409/30364
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1783851A
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US1881394A
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US1953435A
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US1949145A
Cited
US2331337A
Cited
US2359085A
Cited
US2389407A
Cited
US2422137A
Cited
US2437603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |