US2691312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring and turning machine and fixture for generating various predetermined surfacesof revolution
Assignee: Ex-Cell-O Corp
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Filing: 1950-09-20
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Granted: 1954-10-12
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Expires: 1970-09-20
Abstract
No abstract record available.
Inventors
- 👤 Gilbert D Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:35
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; B23B; B23B3/00; B23B3/30; B23B3/32; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/31; Y10T408/33; Y10T82/00; Y10T82/14; Y10T82/16; Y10T82/16032; Y10T82/25; Y10T82/2524; Y10T82/2531; Y10T82/2533; Y10T82/2541
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |