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Konstantins Dravnieks
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Madison, WI, US
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last 30 patents
Information
Patent Grant
Hand-held reciprocating working tool
Patent number
5,099,705
Issue date
Mar 31, 1992
Konstantins Dravnieks
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Soldering gun having finger actuated feed unit apparatus
Patent number
4,793,541
Issue date
Dec 27, 1988
International Development, Inc.
Konstantins Dravnieks
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Energy recovery ventilator
Patent number
4,513,809
Issue date
Apr 30, 1985
Wehr Corporation
Steven L. Schneider
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Heat wheel construction
Patent number
4,307,774
Issue date
Dec 29, 1981
Konstantins Dravnieks
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Heat transfer medium for rotary heat transferrers
Patent number
4,255,171
Issue date
Mar 10, 1981
Wehr Corporation
Konstantins Dravnieks
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Transfer wheel assembly for an air conditioner and method of making...
Patent number
4,234,038
Issue date
Nov 18, 1980
Wehr Corporation
Konstantins Dravnieks
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Flow control unit for air distribution system
Patent number
4,100,938
Issue date
Jul 18, 1978
Wehr Corporation
Konstantins Dravnieks
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Variable volume control box and system incorporating same
Patent number
4,017,025
Issue date
Apr 12, 1977
Wehr Corporation
Konstantins Dravnieks
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Thermostatic control for use in variable air distribution systems
Patent number
3,941,310
Issue date
Mar 2, 1976
Wehr Corporation
Dalny Travaglio
F24 - HEATING RANGES VENTILATING