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US3476537A
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US
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Abrasive composition with limestone as the porosity-inducing agent
Assignee: Acme Abrasive Co
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Filing: 1966-05-23
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Granted: 1969-11-04
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Expires: 1986-05-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Markotan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:51
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2085052A
Cited
US2021359A
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US2249278A
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US2249279A
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US2592954A
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US2577060A
Cited
US3329488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |