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| Patents for Theodore W. Bergquist | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,414,794 | Jan. 28, 1947 | T.W. Bergquist | Safety valve | |
 | CA-475,169 | Jul. 10, 1951 | T.W. Bergquist | Safety valves | |
 | 2,597,057 | May 20, 1952 | T.W. Bergquist | Safety valve | |
 | CA-507,209 | Nov. 09, 1954 | T.W. Bergquist | Safety valves | |