Patent EP0130793A2 successfully refreshed from Google Patents.
US2720141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tools
Assignee: Ex-Cell-O Corp
•
Filing: 1950-10-10
•
Granted: 1955-10-11
•
Expires: 1970-10-10
Abstract
No abstract record available.
Inventors
- 👤 Harold N Seyferth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:58
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/16; B23C3/18; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/302688; Y10T409/302744; Y10T409/302968; Y10T409/303136; Y10T82/00; Y10T82/25; Y10T82/2583
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |