Patent US1491332A successfully refreshed from Google Patents.
US1491332A
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Work supporting and centering device for grinding machines
Assignee: Saint Gobain Abrasives Inc
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Filing: 1921-10-31
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Granted: 1924-04-22
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Expires: 1941-10-31
Abstract
No abstract record available.
Inventors
- 👤 Brown Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:19
CPC Classifications
B; B23; B23B; B23B23/00; B23B23/02; B23B33/00; B23B2215/00; B23B2215/24; B23B2215/245; B23B2233/00; B23B2233/04; B23B2233/28; Y; Y10; Y10T; Y10T279/00; Y10T279/19; Y10T279/1986; Y10T279/26; Y10T82/00; Y10T82/25; Y10T82/2568; Y10T82/26
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) | 1927-04-22 | 1927-10-22 | 1928-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-22 | 1931-10-22 | 1932-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-22 | 1935-10-22 | 1936-04-22 | $7700.00 | Window Closed / Lapsed |