CH167637A
(en )
1934-02-28
Device to protect the heating elements for electric ovens.
FR660687A
(en )
1929-07-16
Improvements to heating installations
FR709840A
(en )
1931-08-13
Improvements to heating devices
FR707729A
(en )
1931-07-11
electrodes for electric ovens
DK46508C
(en )
1932-11-21
Electric heating pad.
FR41504E
(en )
1933-01-28
Improvements to heating devices
CA272562A
(en )
1927-07-26
Electricity heating device
DK47419C
(en )
1933-06-12
Electric Heater.
FR729058A
(en )
1932-07-18
Improvements to heating devices
FI13332A
(en )
1931-02-20
The operating conditions for electric heating
FI11248A
(en )
1926-09-04
Heating oven
FR37966E
(en )
1931-03-03
Improvements to electric heaters
DK35010C
(en )
1925-09-14
Central heating oven with insulation cover.
AU2515330B
(en )
1930-08-26
Electric heating elements
FR644392A
(en )
1928-10-06
Improvements to electrically heated ovens
CA261544A
(en )
1926-06-08
Heating element pack
CA301126A
(en )
1930-06-17
Electric resistance element for electric furnaces
ES113014A1
(en )
1929-07-16
Improvement in the heating of coke ovens.
ES121477A1
(en )
1931-03-16
Improvements in electric ovens.
CA279897A
(en )
1928-05-08
Heating pack
CA285259A
(en )
1928-12-04
Electric heating furnace
DK46742C
(en )
1933-01-09
Device for electric induction furnaces.
DK40497C
(en )
1929-07-22
Electric Resistance Furnace.
DK47843C
(en )
1933-10-09
Safety device for electric irons.
CA284978A
(en )
1928-11-20
Electrical heating device