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BE395745A
(enrdf_load_stackoverflow)
|
|
|
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US2856992A
(en)
|
|
Heat saving device for furnaces
|
|
US4185769A
(en)
|
|
Exhaust flue damper and control system therefor
|
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NL8101943A
(nl)
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Haard met trekbegrenzing en beluchting.
|
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US2633299A
(en)
|
|
Damper and heater control system |
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US4235219A
(en)
|
|
Controlling the damping of flues
|
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US853738A
(en)
|
|
Storage water-heater.
|
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CA1102901A
(en)
|
|
Energy saving flue damper
|
|
US2086671A
(en)
|
|
Spark eliminator and smoke consumer
|
|
US1036616A
(en)
|
|
Automatic draft-regulator for steam-boiler furnaces.
|
|
US2497944A
(en)
|
|
Combination natural and forced draft unit
|
|
US1301588A
(en)
|
|
Smoke-consumer.
|
|
US1295550A
(en)
|
|
Draft-regulator for boiler-furnaces.
|
|
BE344443A
(enrdf_load_stackoverflow)
|
|
|
|
BE380503A
(enrdf_load_stackoverflow)
|
|
|
|
US1822777A
(en)
|
|
Ignition device for oil burners and the like
|
|
US2702589A
(en)
|
|
Oil pressure operated draft control for oil burners
|
|
BE821348A
(fr)
|
|
Economiseur de combustible.
|
|
US1946300A
(en)
|
|
Automatic draft and combustion control
|
|
BE534955A
(enrdf_load_stackoverflow)
|
|
|
|
BE635532A
(enrdf_load_stackoverflow)
|
|
|
|
BE513261A
(enrdf_load_stackoverflow)
|
|
|
|
US623353A
(en)
|
|
Smoke-consumer |
|
BE347884A
(enrdf_load_stackoverflow)
|
|
|
|
US932525A
(en)
|
|
Combined throttle and trip valve.
|