Patent US2327255A successfully refreshed from Google Patents.
US2327255A
Expired / Lapsed
US
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Cylindrical grinding machine
Assignee: Saint Gobain Abrasives Inc
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Filing: 1941-03-07
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Granted: 1943-08-17
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Expires: 1961-03-07
Abstract
No abstract record available.
Inventors
- 👤 Carl G Flygare
- 👤 Stewart S Mader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:16
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/02; B24B47/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18072
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) | 1946-08-16 | 1947-02-15 | 1947-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-08-16 | 1951-02-15 | 1951-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-08-16 | 1955-02-15 | 1955-08-17 | $7700.00 | Window Closed / Lapsed |