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| All Patents in class 72/452.5 | |||||
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| Number | Date | Patentee | Title | Type | |
| 94,441 | Aug. 31, 1869 | H. Reynolds | Apparatus for Welding Chain Links | chain making machines | |
| 1,076,554 | Oct. 21, 1913 | J.I. Depew | Power Hammer | drop hammers | |
| 2,002,563 | May 28, 1935 | C.J. Bath | Bulldozer | metal bending machines | |