USRE15019E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine
Assignee: —
•
Filing: —
•
Granted: 1921-01-04
•
Expires: 1938-01-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:04
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/14; F01L1/143; F01L1/02; F01L1/04; F01L1/047; F01L1/053; F01L1/0532; F01L1/46; F01L1/462; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1924-01-04 | 1924-07-05 | 1925-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-01-04 | 1928-07-05 | 1929-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-01-04 | 1932-07-05 | 1933-01-04 | $7700.00 | Window Closed / Lapsed |