US2564097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-gas engine with automatically controlled heating means
Assignee: Hartford National Bank and Trust Co
•
Filing: 1945-09-05
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Granted: 1951-08-14
•
Expires: 1965-09-05
Abstract
No abstract record available.
Inventors
- 👤 Rinia Herre
- 👤 Willem Jan Van Heeckeren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:16
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/045; F02G1/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE34493C
Cited
US1822133A
Cited
GB315514A
Cited
GB446768A
Cited
US2285288A
Cited
US2394253A
Cited
US2336232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |