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Patent US3400497A successfully refreshed from Google Patents.
US3400497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive disc
Assignee: Dresser Industries Inc
•
Filing: 1965-12-07
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Granted: 1968-09-10
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Expires: 1985-12-07
Abstract
No abstract record available.
Inventors
- 👤 Frank O Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:47
CPC Classifications
B; B24; B24D; B24D7/00; B24D7/02; B24D7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US228257A
Cited
US2147438A
Cited
US2643494A
Cited
US3141271A
Cited
US3262231A
Cited
US3315418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |