US2485813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor-turbine engine
Assignee: Individual
•
Filing: 1945-04-30
•
Granted: 1949-10-25
•
Expires: 1965-04-30
Abstract
No abstract record available.
Inventors
- 👤 Bert G Carison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:55
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/16; F02C7/18; F02C5/00; F02C5/12; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB190527019A
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GB191029311A
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US1255852A
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US1331766A
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GB174179A
Cited
US1640784A
Cited
US1828782A
Cited
GB347206A
Cited
US2154481A
Cited
US2073605A
Cited
GB467630A
Cited
US2326072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |