Patent US3522114A successfully refreshed from Google Patents.
Patent US3882634A successfully refreshed from Google Patents.
Patent FR769579A successfully refreshed from Google Patents.
FR769579A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Advanced device for varying the compression ratio of compression ignition oil engines
Assignee: Lister & Co Ltd R A
•
Filing: 1934-03-03
•
Granted: 1934-08-28
•
Expires: 1954-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 14:24
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/14; F02D; F02D15/00; F02D15/04; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.