Patent US2672715A successfully refreshed from Google Patents.
US2672715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive belt
Assignee: Individual
•
Filing: 1951-04-25
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Granted: 1954-03-23
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Expires: 1971-04-25
Abstract
No abstract record available.
Inventors
- 👤 Walters Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
B; B24; B24D; B24D11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1195036A
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US804514A
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US1995868A
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US2141396A
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US2157082A
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US2288649A
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US2270154A
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US2422910A
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US2570576A
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US2522774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |