US2616244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for varying the quantity of working medium in hot-gas reciprocating engines
Assignee: Hartford National Bank and Trust Co
•
Filing: 1949-06-21
•
Granted: 1952-11-04
•
Expires: 1969-06-21
Abstract
No abstract record available.
Inventors
- 👤 Veldhuyzen Eduard Joha Jacobus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:13
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/045; F02G1/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US826313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |