Patent US3090169A successfully refreshed from Google Patents.
US3090169A
Expired / Lapsed
US
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Lapping machine fixture
Assignee: Individual
•
Filing: 1961-05-11
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Granted: 1963-05-21
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Expires: 1981-05-11
Abstract
No abstract record available.
Inventors
- 👤 Stephen A Boettcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:54
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/10; B24B37/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A LAPPING MACHINE FIXTURE FOR PREDETERMINING THE EXTENT OF LAPPING WORK PIECES POSITIONED ON A ROTATING LAPPING DISC WITHIN A TRUING AND RETAINING RING THEREON, A PLATE FOR RESTING ON SAID WORK PIECES, A SECOND PLATE PARALLEL THERETO AND ADJUSTABLY DISTANCED THEREFROM, AND MEANS CARRIED BY SAID SECOND PLATE FOR ENGAGING THE LAPPING DISK TO ARREST THE DOWNWARD MOVEMENT OF SAID PLATES.
Claim 2
Dependent Claim
63 words
IN A LAPPING MACHINE FIXTURE FOR PREDETERMINING THE EXTENT OF LAPPING WORK PIECES POSITIONED ON A ROTATING LAPPING DISC WITHIN A TRUING AND RETAINING RING THEREON, A PLATE FOR RESTING ON SAID WORK PIECES, A SECOND PLATE PARALLEL THERETO AND ADJUSTABLY DISTANCED THEREFROM, AND MEANS CARRIED BY SAID SECOND PLATE FOR ENGAGING THE LAPPING DISK TO ARREST THE DOWNWARD MOVEMENT OF SAID PLATES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |