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Patent US2679764A successfully refreshed from Google Patents.
US2679764A
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Assignee: American Steel Foundries
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Filing: 1950-05-19
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Granted: 1954-06-01
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Expires: 1970-05-19
Abstract
No abstract record available.
Inventors
- 👤 John J Kowalik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:51
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0007; B61H15/0014; B61H15/0028; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32819; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18656; Y10T74/18704
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1418298A
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US2217533A
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US2243732A
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US2419673A
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US2403512A
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US2538757A
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US2555124A
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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) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |