DC

David M. Christensen

ES Empire Comfort Systems: 6 patents #1 of 12Top 9%
AR Amana Refrigeration: 2 patents #16 of 71Top 25%
GG Gateway Consultants Group: 1 patents #102 of 188Top 55%
📍 Sioux Falls, SD: #30 of 532 inventorsTop 6%
🗺 South Dakota: #90 of 2,308 inventorsTop 4%
Overall (All Time): #345,940 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
11156383 High efficiency heater with condensate collection and humidification Bruce Dresner, Scott G. Schulte 2021-10-26
10781049 Magnetic material handler 2020-09-22
10072872 High efficiency heater with condensate collection and humidification Bruce Dresner, Scott G. Schulte 2018-09-11
9062881 Control system for space heater/hearth Bruce Dresner, Frank D. Wurth 2015-06-23
7438185 Stackable tray with integral latch Thi Ho 2008-10-21
7299927 Stackable wafer container with raised handle and ribs Steven R. Emter 2007-11-27
6945160 Outdoor cooker and smoker apparatus Bernard A. Lauzon, Daniel J. Sovar, John A. Schweiss 2005-09-20
6463926 Direct vent fireplace with baffled, directional exhaust and vent air column Christopher L. Flick, Corbit Beasey, Robert B. Zahm 2002-10-15
6314868 Direct and indirect outdoor cooker John Hart, Wayne E. Thuenemann 2001-11-13
6269737 Food cooking apparatus Donald P. Rigney 2001-08-07
6173843 Computer expansion card latching and retention mechanism Arthur Lee Smith 2001-01-16
5337590 Method and apparatus for bending tubes using split bend die Eugene H. Schuchert, Samuel B. McGuire 1994-08-16
5284041 Method for bending tubes using split die Eugene H. Schuchert, Richard N. Walker 1994-02-08
4970870 Commands system for electronic refrigerator control Brian M. Midlang 1990-11-20