US2424031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for machining any kind of curved surfaces
Assignee: Sulzer Escher Wyss GmbH
•
Filing: 1945-03-20
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Granted: 1947-07-15
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Expires: 1965-03-20
Abstract
No abstract record available.
Inventors
- 👤 Heer Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:26
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23Q35/36; B23Q35/08; B23Q35/18; B23Q2735/00; B23Q2735/02; B23Q2735/08; B23Q2735/085; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301624; Y10T409/30168; Y10T409/302072; Y10T409/302968; Y10T409/303136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2337223A
Cited
US2341194A
Cited
US2332532A
Cited
US2335625A
Cited
US2345494A
Cited
US2365558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |