US2773490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High expansion, spark ignited, gas burning, internal combustion engines
Assignee: Individual
•
Filing: 1952-09-23
•
Granted: 1956-12-11
•
Expires: 1972-09-23
Abstract
No abstract record available.
Inventors
- 👤 Miller Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:50
CPC Classifications
F; F02; F02B; F02B41/00; F02D; F02D13/00; F02D13/02; F02D13/0203; F02D13/0215; F02D13/0269; F02D13/0276; F02D13/028; F02B1/00; F02B1/02; F02B1/04; F02B2275/00; F02B2275/32; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1082004A
Cited
US1316977A
Cited
US1330496A
Cited
US1497206A
Cited
US2035569A
Cited
US2292233A
Cited
GB542429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |