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US2995317A
Expired / Lapsed
US
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External combustion stato-jet engine
Assignee: Metallbau Semler GmbH
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Filing: 1955-09-14
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Granted: 1961-08-08
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Expires: 1975-09-14
Abstract
No abstract record available.
Inventors
- 👤 Schoppe Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:03
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/10; F02K7/14; B; B64; B64C; B64C23/00; B64C23/005; B64C9/00; B64C9/38
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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |