Patent US2674754A successfully refreshed from Google Patents.
US2674754A
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US
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Shank slotting machines
Assignee: South Chester Corp
•
Filing: 1949-11-18
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Granted: 1954-04-13
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Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Hale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:07
CPC Classifications
B; B23; B23G; B23G9/00; B23G9/001; B23G9/002; B23G9/005; B23G9/006; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306664; Y10T409/307448; Y10T409/307504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1010460A
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US1434615A
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US1389308A
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US1615538A
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US1588576A
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US1860840A
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US1893509A
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US1920108A
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US1938939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |