US3517510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-starting valveless resonant pulse-jet engine and method
Assignee: JOHN A MELENRIC
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Filing: 1968-03-11
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Granted: 1970-06-30
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Expires: 1988-03-11
Abstract
No abstract record available.
Inventors
- 👤 John A Melenric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:56
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2645906A
Cited
US2663142A
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US2826043A
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US2795105A
Cited
US3093962A
Cited
US3354650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |