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| All Patents in class 434/365 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,991,854 | Feb. 19, 1935 | C.E. Johansson | Apparatus for demonstrating the adhesion of flat surfaces | measuring tools | |
| 3,469,814 | Sep. 30, 1969 | R.W. Peterson, A.W. Carlson | Mirror suspension | ||