US2440069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature elastic fluid turbine
Assignee: General Electric Co
•
Filing: 1944-08-26
•
Granted: 1948-04-20
•
Expires: 1964-08-26
Abstract
No abstract record available.
Inventors
- 👤 David J Bloomberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:04
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/081; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US881474A
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US986317A
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US1061648A
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US1263473A
Cited
GB182893A
Cited
US1640784A
Cited
DE491738C
Cited
US1819864A
Cited
GB504214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |