FR514273A
(en )
1921-03-07
Electric spark plug for internal combustion engines
CH82673A
(en )
1919-10-16
Electric spark plug for internal combustion engines
FR522167A
(en )
1921-07-27
Spark plug for internal combustion engines
FR517179A
(en )
1921-04-30
Spark plug for internal combustion engines
FR514530A
(en )
1921-03-12
Spark plug for internal combustion engines
FR529773A
(en )
1921-12-06
Spark plug for internal combustion engines
CH82503A
(en )
1919-10-01
Electric spark plug for combustion engines
FR497769A
(en )
1919-12-17
Spark plugs for internal combustion engines
FR509985A
(en )
1920-11-24
Spark plugs for internal combustion engines
FR22617E
(en )
1921-08-04
Spark plugs for internal combustion engines
FR507177A
(en )
1920-09-07
Electric spark formation point self-cleaning spark plug for internal combustion engine
FR527930A
(en )
1921-11-03
Removable spark plug for internal combustion engines
FR533788A
(en )
1922-03-10
Spark plug for internal combustion engines
FR524010A
(en )
1921-08-29
Spark plug for internal combustion engines
FR521164A
(en )
1921-07-07
Spark plug for internal combustion engines
FR495371A
(en )
1919-10-07
Spark plug for internal combustion engines
FR497326A
(en )
1919-12-03
Spark plug for internal combustion engines
FR21488E
(en )
1920-10-12
Spark plug for internal combustion engines
FR495853A
(en )
1919-10-21
Electric spark plug for internal combustion engines
FR506737A
(en )
1920-08-28
Decompression spark plug for internal combustion engines
FR497763A
(en )
1919-12-17
Spark plugs for internal combustion engines
FR21333E
(en )
1920-08-09
Spark plugs for internal combustion engines
FR497223A
(en )
1919-11-29
Spark plugs for internal combustion engines
FR497006A
(en )
1919-11-22
Spark plugs for internal combustion engines
FR496361A
(en )
1919-11-05
Spark plugs for internal combustion engines