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BE395745A
(instruction)
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NL8101943A
(nl)
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Haard met trekbegrenzing en beluchting.
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US4235219A
(en)
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Controlling the damping of flues
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US2633299A
(en)
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Damper and heater control system |
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US853738A
(en)
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Storage water-heater.
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CA1102901A
(en)
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Energy saving flue damper
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US2086671A
(en)
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Spark eliminator and smoke consumer
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US1036616A
(en)
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Automatic draft-regulator for steam-boiler furnaces.
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US2497944A
(en)
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Combination natural and forced draft unit
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US1301588A
(en)
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Smoke-consumer.
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US1295550A
(en)
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Draft-regulator for boiler-furnaces.
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BE344443A
(instruction)
|
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|
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BE380503A
(instruction)
|
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US1822777A
(en)
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Ignition device for oil burners and the like
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US2702589A
(en)
|
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Oil pressure operated draft control for oil burners
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BE821348A
(fr)
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Economiseur de combustible.
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US1946300A
(en)
|
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Automatic draft and combustion control
|
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BE635532A
(instruction)
|
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US2088037A
(en)
|
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Fuel regulating system
|
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BE513261A
(instruction)
|
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US623353A
(en)
|
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Smoke-consumer |
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BE347884A
(instruction)
|
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US932525A
(en)
|
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Combined throttle and trip valve.
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FR2524613A1
(fr)
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Clapet coupe-tirage (pour chaudiere fuel)
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US899102A
(en)
|
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Air-regulator for furnaces.
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