US2540323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: Individual
•
Filing: 1945-11-17
•
Granted: 1951-02-06
•
Expires: 1965-11-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Cross
- 👤 Kurt O Tech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:05
CPC Classifications
B; B23; B23B; B23B7/00; B23B7/12; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/147; Y10T82/25; Y10T82/2531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US689845A
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US861567A
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US1239422A
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US2118020A
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US1933055A
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US2017371A
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US2002933A
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GB481831A
Cited
US2338125A
Cited
US2342792A
Cited
US2377239A
Cited
US2433027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |