Patent DE616451C successfully refreshed from Google Patents.
DE616451C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Two-stroke internal combustion engine with two counter-rotating pistons each driving a crankshaft
Assignee: RICHARD RIBBACK
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Filing: 1932-11-20
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Granted: 1935-07-29
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Expires: 1952-11-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 17:17
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/04; F01; F01B; F01B7/00; F01B7/02; F01B7/14; F02B75/02; F02B2075/022; F02B2075/025; F02B75/28
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