4. Stoves and furnaces
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Oblique compound parabolic reflector

Stoves and furnaces – Stoves – Cooking
Patent

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Offset truss hex solar concentrator

Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil and gas water heater

Stoves and furnaces – Liquid heater – Boiler receiving hot liquid or steam from stove or furnace
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil and gas water heater

Stoves and furnaces – Liquid heater – Fluid fuel burner for other than top-accessible vessel
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil and gas water heater

Stoves and furnaces – Liquid heater – Boiler receiving hot liquid or steam from stove or furnace
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil collection device for a kitchen range hood

Stoves and furnaces – Stove hoods
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil combustion type infrared ray generating apparatus

Stoves and furnaces – Stoves – Heating
Patent

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Oil field steam production and use

Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent

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Oil separation and heat recovery system

Stoves and furnaces – Stove hoods
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil stove

Stoves and furnaces – Stoves – Heating
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil stove

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil stove

Stoves and furnaces – Stoves – Heating
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil stove for burning waste oil and normal heating oil

Stoves and furnaces – Stoves – Heating
Patent

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Oil stove for burning waste oil and normal heating oil

Stoves and furnaces – Stoves – Heating
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oil-removal structure for range hoods

Stoves and furnaces – Stove hoods
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Oily smoke treating and exhausting device

Stoves and furnaces – Stove hoods
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Omnidirectional heat pipe

Stoves and furnaces – Heaters – Surface
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Omnidirectional solar collector

Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

One button gas shutoff apparatus

Stoves and furnaces – Stoves – Cooking
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

One hand fixed temperature coating remover

Stoves and furnaces – Tool having fluid fuel burner
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0
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