Patent US2679452A successfully refreshed from Google Patents.
US2679452A
Expired / Lapsed
US
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Abrading tool-diamond lap
Assignee: United States Department of the Interior
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Filing: 1951-04-20
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Granted: 1954-05-25
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Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
- 👤 Perry G Cotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:01
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/08; B24D18/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A METAL-BONDED ABRASIVE ARTICLE COMPRISING DIAMOND PARTICLES BONDED IN A METALLIC MATRIX TO TITANIUM METAL, THE PROPORTION OF TITANIUM METAL TO DIAMOND PARTICLES BEING ABOUT 49 TO 1.
Claim 2
Dependent Claim
28 words
A METAL-BONDED ABRASIVE ARTICLE COMPRISING DIAMOND PARTICLES BONDED IN A METALLIC MATRIX TO TITANIUM METAL, THE PROPORTION OF TITANIUM METAL TO DIAMOND PARTICLES BEING ABOUT 49 TO 1.
References Cited (Backward Citations)
US2240829A
Cited
US2545676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |