Radiant energy – Radiant energy generation and sources
Patent
1989-04-12
1990-07-31
Berman, Jack I.
Radiant energy
Radiant energy generation and sources
250504R, 44 33, 44 38, F21K 700
Patent
active
049452487
ABSTRACT:
A waterproof container such as a plastic or treated paper bag is filled w a dry biodegradable vegetable material such as hay, grass clippings, wood shavings, etc. When water is added to the container to wet its contents, the normally-occurring micro-organisms on the vegetable matter decompose it and release heat.
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patent: 3797395 (1974-03-01), Tyroler
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patent: 4338098 (1982-07-01), Yamaji
patent: 4435645 (1984-03-01), Bartle
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Berman Jack I.
Dunn Aubrey J.
Lane Anthony T.
Lee Milton W.
Nguyen Kiet T.
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