Patent US2164169A successfully refreshed from Google Patents.
US2164169A
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Optical profile grinding machine
Assignee: AG Vorm Seidel & Naumann
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Filing: 1938-07-21
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Granted: 1939-06-27
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Expires: 1958-07-21
Abstract
No abstract record available.
Inventors
- 👤 Wohlfarth Reinhard Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:03
CPC Classifications
B; B24; B24B; B24B17/00; B24B17/04; Y; Y10; Y10S; Y10S451/00; Y10S451/913; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301232; Y10T409/303416; Y10T409/303472; Y10T409/303528; Y10T409/303584
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) | 1942-06-26 | 1942-12-26 | 1943-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-26 | 1946-12-26 | 1947-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-26 | 1950-12-26 | 1951-06-27 | $7700.00 | Window Closed / Lapsed |