Patent US3170272A successfully refreshed from Google Patents.
US3170272A
Expired / Lapsed
US
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Contour abrading machine and method
Assignee: Individual
•
Filing: 1963-06-03
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Granted: 1965-02-23
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Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Richard C Burnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:16
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
CONTOUR ABRADING MACHINE COMPRISING MEANS FOR CONTINUOUSLY ADVANCING AN ENDLESS ABRADING BELT IN A SLACK CONDITION ABOUT A PATH, A CONTOURED SURFACE DISPOSED WITHIN SAID PATH AND SUCTION MEANS FOR DRAWING A PORTION OF THE ABRADING BELT INTO SURFAC-TO-SURFACE CONFORMITY WITH SAID CONTOURED SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |