Patent US3402705A successfully refreshed from Google Patents.
US3402705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: JOHN DONALD STEVENSON
•
Filing: 1967-02-20
•
Granted: 1968-09-24
•
Expires: 1987-02-20
Abstract
No abstract record available.
Inventors
- 👤 Stevenson John Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:58
CPC Classifications
F; F02; F02B; F02B33/00; F02B33/32; F02B33/34; F02B33/36; F02B25/00; F02B33/02; F02B33/06; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2700/00; F02B2700/03; F02B2700/037
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1812566A
Cited
US1925851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |