US2233571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: Ex-Cell-O Corp
•
Filing: 1938-07-13
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Granted: 1941-03-04
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Expires: 1958-07-13
Abstract
No abstract record available.
Inventors
- 👤 Carroll R Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:07
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/52; B23Q2705/00; B23Q2705/22; Y; Y10; Y10S; Y10S60/00; Y10S60/911; Y10T; Y10T408/00; Y10T408/16; Y10T408/165; Y10T408/17; Y10T408/173; Y10T408/36; Y10T408/375; Y10T408/378; Y10T408/3788; Y10T408/47; Y10T408/476
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) | 1944-03-03 | 1944-09-02 | 1945-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-03 | 1948-09-02 | 1949-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-03 | 1952-09-02 | 1953-03-04 | $7700.00 | Window Closed / Lapsed |