US2585810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valveless pulse jet engine having electric arc heating means
Assignee: Individual
•
Filing: 1945-10-26
•
Granted: 1952-02-12
•
Expires: 1965-10-26
Abstract
No abstract record available.
Inventors
- 👤 George E Mallinckrodt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:05
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE288168C
Cited
US745805A
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GB190720697A
Cited
FR412478A
Cited
GB162972A
Cited
DE370388C
Cited
US1517422A
Cited
US1836994A
Cited
US1934518A
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US2377247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |