US2049874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotted abrasive wheel
Assignee: MIAMI ABRASIVE PRODUCTS Inc
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Filing: 1933-08-21
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Granted: 1936-08-04
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Expires: 1953-08-21
Abstract
No abstract record available.
Inventors
- 👤 Harley E Sherk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:38
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/48; B; B24; B24D; B24D5/00; B24D5/02
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) | 1939-08-04 | 1940-02-03 | 1940-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-04 | 1944-02-03 | 1944-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-04 | 1948-02-03 | 1948-08-04 | $7700.00 | Window Closed / Lapsed |