Patent US2514728A successfully refreshed from Google Patents.
US2514728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicylinder piston engine
Assignee: Individual
•
Filing: 1947-01-23
•
Granted: 1950-07-11
•
Expires: 1967-01-23
Abstract
No abstract record available.
Inventors
- 👤 Slaterus Wolter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:00
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0082; F01B3/0085; F01B3/0088; F01B3/0002; F01B3/0008; F01B3/04; F02; F02B; F02B75/00; F02B75/26; F02B75/02; F02B2075/022; F02B2075/027; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1824; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1080123A
Cited
US1339276A
Cited
US1876506A
Cited
US2118804A
Cited
US2243822A
Cited
US2445902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |