US2664698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-gas reciprocating engine with means for augmenting the pressure medium and supplying combustion air
Assignee: Hartford National Bank and Trust Co
•
Filing: 1950-08-30
•
Granted: 1954-01-05
•
Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 Abraham Nicolaas Jan Van Poll
- 👤 Geeven Gomarus Maria Cornelis
- 👤 Eernst Gijsbertus
- 👤 Slui Jacob Gerrit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:26
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US155087A
Cited
US270036A
Cited
US334153A
Cited
US1169308A
Cited
GB196620A
Cited
US2067453A
Cited
US2434726A
Cited
US2588530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |