CENTRA HANDELS & IND A G innovation strategy

Patent filings in countries

#	Technology
#1	Internal-combustion piston engines
#2	Machines
#3	Cylinders for combustion engines
#4	Unspecified technologies
#5	Climate change mitigation in transportation

Publication	Filing date	Title
GB409541A	1933-07-27	Improvements in and relating to two-stroke cycle internal combustion engines
US2014672A	1933-07-21	Internal combustion engine
GB401934A	1933-02-27	Improvements in and relating to pistons for internal combustion engines
ES121408A1	1931-01-24	A combustion engine with different stroke pistons found and coupling frame.
US1919572A	1931-01-24	Internal combustion engine
US1925878A	1930-07-22	Internal combustion engine
ES117234A1	1930-03-11	A cylinder support body for combustion engines with several cylinders mounted on a star, whose pistons act on a common combustion chamber.
GB337333A	1930-03-10	Improvements relating to means for mounting the cylinders of radial-cylinder internal combustion engines
DE533982C	1930-02-01	Internal combustion engine with cylinder stars in a polygonal arrangement
DE563171C	1930-02-01	Internal combustion engine with opposing pistons and coupling frame
US1822750A	1930-01-03	Two-stroke cycle internal combustion engine
DE495391C	1929-07-23	Internal combustion engine of high performance with cylinder stars in a polygonal arrangement
ES112217A1	1929-03-30	A combustion engine with a cylinder star, whose pistons work in a common combustion chamber.
DE478361C	1925-07-21	Internal combustion engine with airless injection and several pistons running in opposite directions
US1613283A	1922-10-26	Rotary engine
US1603969A	1921-08-23	Two-stroke-cycle internal-combustion engine