US 3,931,494 · Granted 1976-01-06
Rechargeable battery heating unit
An improved warming container which may comprise either a cup, pot, bowl or the like, and which includes an electric heating element built into its bottom and side walls, the heating element being connected to a rechargeable battery, thermostat and switch located on its underside and which are completely enclosed so to allow the vessel being fully submerged during washing without damage to the electric system.
Patent details
- Publication number
- US 3,931,494
- Filing date
- 1975-04-01
- Grant date
- 1976-01-06
- Assignee
- Barbara Fisher / George Spector
- Inventor(s)
- FISHER; BARBARA, SPECTOR; GEORGE
- CPC class
- A47J36/2461
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