US2442019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine construction
Assignee: Allis Chalmers Corp
•
Filing: 1943-06-11
•
Granted: 1948-05-25
•
Expires: 1963-06-11
Abstract
No abstract record available.
Inventors
- 👤 James L Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:02
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US750880A
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US760003A
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US1012813A
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US1234687A
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US1190074A
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US1621435A
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US1987631A
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US2081149A
Cited
US2131047A
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US2207762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |