Patent US2391487A successfully refreshed from Google Patents.
US2391487A
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Machine tool
Assignee: Ex-Cell-O Corp
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Filing: 1937-02-26
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Granted: 1945-12-25
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Expires: 1957-02-26
Abstract
No abstract record available.
Inventors
- 👤 Ira J Snader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:10
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23Q; B23Q1/00; B23Q1/25; B23Q1/64; B23Q1/68; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/20; B23Q5/22; B23Q5/26; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5105; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6757
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) | 1948-12-24 | 1949-06-25 | 1949-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-24 | 1953-06-25 | 1953-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-24 | 1957-06-25 | 1957-12-25 | $7700.00 | Window Closed / Lapsed |