Patent US2941731A successfully refreshed from Google Patents.
US2941731A
Expired / Lapsed
US
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Precision grinder
Assignee: Microcyclomat Co
•
Filing: 1955-03-28
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Granted: 1960-06-21
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Expires: 1975-03-28
Abstract
No abstract record available.
Inventors
- 👤 Henry G Lykken
- 👤 William H Lykken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:46
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C11/00; B02C11/08; B02C13/13; B02C19/00; B02C19/0012; B02C19/005; B02C23/00; B02C13/14; B02C2013/145
Claims Analysis
Total Claims: 0
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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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |