US2959159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-piston internal combustion apparatus
Assignee: Battelle Development Corp
•
Filing: 1958-05-16
•
Granted: 1960-11-08
•
Expires: 1978-05-16
Abstract
No abstract record available.
Inventors
- 👤 Rollin J Mccrory
- 👤 Robert W King
- 👤 Donald G Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
F; F23; F23Q; F23Q3/00; F23Q3/002; F02; F02B; F02B71/00; F02B71/04; F23Q2/00; F23Q2/28; F23Q2/285; F23Q2/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE526871A
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US667993A
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DE577523C
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US2219816A
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US2461222A
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US2468019A
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US2468020A
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US2718884A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |