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US2579583A
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Assignee: Allis Chalmers Corp
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Filing: 1945-01-29
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Granted: 1951-12-25
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Expires: 1965-01-29
Abstract
No abstract record available.
Inventors
- 👤 William C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:43
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/3061; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T29/49321
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1932278A
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US2240742A
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US2265592A
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US2283901A
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US2454580A
Cited
US2380276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |