Patent US2427283A successfully refreshed from Google Patents.
US2427283A
Expired / Lapsed
US
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Centerless grinding machine
Assignee: Landis Machine Co
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Filing: 1944-10-04
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Granted: 1947-09-09
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Expires: 1964-10-04
Abstract
No abstract record available.
Inventors
- 👤 Cecil W Hopkins
- 👤 Edwin M Eigenbrode
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:39
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1850054A
Cited
US1814351A
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US2029510A
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GB364312A
Cited
US2025714A
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US2091655A
Cited
US2088737A
Cited
US2346851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |