US2614546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine
Assignee: SINCLAIR RES LAB Inc
•
Filing: 1948-01-22
•
Granted: 1952-10-21
•
Expires: 1968-01-22
Abstract
No abstract record available.
Inventors
- 👤 Schwarz Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:35
CPC Classifications
F; F02; F02D; F02D15/00; F02D15/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US741824A
Cited
US1139106A
Cited
GB191105947A
Cited
GB191106508A
Cited
US1094329A
Cited
US1384031A
Cited
US1751281A
Cited
US1821396A
Cited
US1787326A
Cited
US2114924A
Cited
US2001535A
Cited
US1962134A
Cited
US2168015A
Cited
US2142466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |