Patent EP0997973A1 successfully refreshed from Google Patents.
US1737486A
Expired / Lapsed
US
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Apparatus for manufacturing rigid grinding bodies of emery, carborundum, or the like
Assignee: Firm Of Ernst Winter & Sohn
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Filing: 1927-12-22
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Granted: 1929-11-26
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Expires: 1947-12-22
Abstract
No abstract record available.
Inventors
- 👤 Winter Heinrich Eduard Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:17
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B2260/00; B23B2260/12; B23B2270/00; B23B2270/14; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45
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) | 1932-11-25 | 1933-05-27 | 1933-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-11-25 | 1937-05-27 | 1937-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-11-25 | 1941-05-27 | 1941-11-26 | $7700.00 | Window Closed / Lapsed |