US2515933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating engine with start-run conditioning means
Assignee: Hartford National Bank and Trust Co
•
Filing: 1945-09-07
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Granted: 1950-07-18
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Expires: 1965-09-07
Abstract
No abstract record available.
Inventors
- 👤 Willem Jan Van Heeckeren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:54
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/045; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/211; Y10T74/2114; Y10T74/2115
Claims Analysis
Total Claims: 0
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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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |