US3407593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating stirling cycle engine with dual wave cam drive
Assignee: Individual
•
Filing: 1967-04-10
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Granted: 1968-10-29
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Expires: 1987-04-10
Abstract
No abstract record available.
Inventors
- 👤 Donald A Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:43
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043
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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |