Poms, Smith, Lande & Rose
Apparatus for indicating quantity of liquified gas contained in a storage container
 Apparatus for indicating quantity of liquified gas contained in a storage container for supplying gas to a consuming appliance, the apparatus including a pressure sensor for sensing gas pressure within the container and being arranged to operate an indicator which gives a desired indication, the indicator being calibrated to indicate the quantity by weight or volume of liquified gas contained in the container. 
Energy Innovation Enterprises, Ltd.
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Kenneth E. John
Gregory Gaunt