US2522649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stroke cycle engine cylinder and pump
Assignee: Individual
•
Filing: 1945-10-06
•
Granted: 1950-09-19
•
Expires: 1965-10-06
Abstract
No abstract record available.
Inventors
- 👤 William L Tenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:38
CPC Classifications
F; F02; F02B; F02B33/00; F02B33/02; F02B33/06; F02B33/22; F02B33/20; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02M; F02M2700/00; F02M2700/33; F02M2700/331
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB344085A
Cited
US895982A
Cited
US931346A
Cited
US956405A
Cited
GB191416865A
Cited
US1154366A
Cited
FR576387A
Cited
US1510620A
Cited
US1686236A
Cited
US1922985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |