CH75421A
(en )
1917-07-16
Electric radiator and process for its manufacture
CH80499A
(en )
1919-03-17
Electric radiator and process for its manufacture
CH78760A
(en )
1918-12-16
Electric radiator and method of making the same
CH75854A
(en )
1917-10-01
Process for the manufacture of electric radiators
CH72922A
(en )
1916-07-17
Process for the manufacture of electric radiators
CH67728A
(en )
1915-01-16
Method of manufacturing electric radiators
CH76772A
(en )
1918-06-17
Electric radiator, and method and device for producing the same
CH72800A
(en )
1916-07-01
Electric heater for running water
CH75026A
(en )
1917-05-16
Electric radiator
CH75322A
(en )
1917-07-02
Electric radiator
CH74418A
(en )
1917-03-01
Electric radiator
AT91983B
(en )
1923-03-26
Power transmission belt and process for its manufacture.
CH71159A
(en )
1915-12-01
Process and device for the production of electrical heating elements by means of the metal spraying process
AT98143B
(en )
1924-10-10
Process for the manufacture of lamellar electric detonators
CH77215A
(en )
1918-03-16
Electric heater
CH77633A
(en )
1918-10-01
Electric heater
CH79434A
(en )
1918-11-16
Electric heater
CH74922A
(en )
1917-05-01
Electric heater
NL6643C
(en )
1922-03-15
Method of producing ebonite type
CH75776A
(en )
1917-09-17
Process for the production of electrical insulating fittings
CH75420A
(en )
1918-01-02
Electric tubular radiator
CH78689A
(en )
1918-08-16
Headed studs and process for their manufacture
AT76380B
(en )
1919-05-10
Process and system for the production of pre-doughs.
CH76908A
(en )
1918-02-16
Burning briquette and process for making the same
CH101166A
(en )
1923-09-01
Process for the production of nitric acid by means of electric flame arcs using the circulatory process.