US2793496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion turbine units
Assignee: Napier Turbochargers Ltd
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Filing: 1952-06-03
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Granted: 1957-05-28
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Expires: 1972-06-03
Abstract
No abstract record available.
Inventors
- 👤 Mortimer Alfred Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:20
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/42; F23R3/56; F02; F02C; F02C3/00; F02C3/04; F02C3/06; F23R3/28; F23R3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |