Patent US2855910A successfully refreshed from Google Patents.
US2855910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engines
Assignee: Individual
•
Filing: 1955-09-08
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Granted: 1958-10-14
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Expires: 1975-09-08
Abstract
No abstract record available.
Inventors
- 👤 Waern Bror Algor De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:36
CPC Classifications
F; F02; F02B; F02B25/00; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2720/00; F02B2720/23; F02B2720/236; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US983369A
Cited
US890272A
Cited
US1405975A
Cited
US1526076A
Cited
US2043296A
Cited
US2126270A
Cited
US2288326A
Cited
US2347465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |