Patent US2554079A successfully refreshed from Google Patents.
US2554079A
Expired / Lapsed
US
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Method and apparatus for continuous form grinding
Assignee: Thompson Grinder Co
•
Filing: 1948-06-10
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Granted: 1951-05-22
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Expires: 1968-06-10
Abstract
No abstract record available.
Inventors
- 👤 John C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:00
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/12; Y; Y10; Y10S; Y10S451/00; Y10S451/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US641545A
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US665661A
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US697383A
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US1142700A
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US1886878A
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US1897049A
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US1905651A
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US2264053A
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US2298955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |