Patent US2968135A successfully refreshed from Google Patents.
US2968135A
Expired / Lapsed
US
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Lapping machine
Assignee: ABRADING SYSTEMS Co
•
Filing: 1958-04-07
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Granted: 1961-01-17
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Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 Stephen A Boettcher
- 👤 Jack C Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:46
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/10; B24B37/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2826009A
Cited
US2830412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |