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Document detector and collector
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Patent number 4,299,325
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Issue date Nov 10, 1981
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Halm Industries Co., Inc.
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Brian M. Quinton
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Vanes for solar heating
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Patent number 4,258,702
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Issue date Mar 31, 1981
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Heat storage water tank
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Patent number RE30540
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Issue date Mar 10, 1981
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Halm Instrument Co., Inc.
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Floyd A. Lyon
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126 - Stoves and furnaces
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Solar heating system
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Patent number 4,237,863
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Issue date Dec 9, 1980
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Halm Industries Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Translucent roofing means
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Patent number 4,189,882
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Issue date Feb 26, 1980
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Flow control means
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Patent number 4,190,084
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Issue date Feb 26, 1980
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Halm Instrument Co., Inc.
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Henry Harrison
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G05 - CONTROLLING REGULATING
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Air-heating solar collector
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Patent number 4,155,344
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Issue date May 22, 1979
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Halm Instrument Co., Inc.
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Floyd A. Lyon
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F24 - HEATING RANGES VENTILATING
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Solar energy collector
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Patent number 4,144,872
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Issue date Mar 20, 1979
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Heat storage water tank
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Patent number 4,108,374
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Issue date Aug 22, 1978
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Halm Instrument Co., Inc.
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Floyd A. Lyon
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F24 - HEATING RANGES VENTILATING
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Air-heating solar collector
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Patent number 4,086,909
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Issue date May 2, 1978
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Halm Instrument Co., Inc.
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Floyd A. Lyon
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F24 - HEATING RANGES VENTILATING
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Mechanical heat exchange joint
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Patent number 4,076,076
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Issue date Feb 28, 1978
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Heat transfer block means
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Patent number 4,051,891
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Issue date Oct 4, 1977
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Heat and moisture exchanger
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Patent number 4,040,804
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Issue date Aug 9, 1977
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Solar heat collector tank
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Patent number 4,038,966
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Issue date Aug 2, 1977
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Cold storage tank
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Patent number 4,011,736
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Issue date Mar 15, 1977
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Halm Instrument Co., Inc.
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Henry Harrison
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F28 - HEAT EXCHANGE IN GENERAL
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Heat storage tank
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Patent number 4,010,731
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Issue date Mar 8, 1977
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING
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Solar water heating system
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Patent number 3,989,032
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Issue date Nov 2, 1976
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Halm Instrument Co., Inc.
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Henry Harrison
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F24 - HEATING RANGES VENTILATING