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| All Patents in class 144/69 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,291,761 | Aug. 04, 1942 | E.P. Sacrey | Slat slotting machine | windowblind machines | |
| 3,301,288 | Jan. 31, 1967 | R.N. Norlie, R.M. Sheffield | Routing machine | routing machines | |