4. Stoves and furnaces
  5. Heaters
  6. Surface

Marvin A. Roberts

Inventor

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Demand drive component

Advancing material of indeterminate length – By orbitally traveling material-engaging surface – Including details of roll or mount
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Film loop apparatus

Winding – tensioning – or guiding – Coil holder or support – Spool or core
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Floating solar heater for swimming pools

Stoves and furnaces – Heaters – Surface
Patent

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Profile ID: LFUS-PAI-P-1777332

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