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| Patents for Howard D. Orr | |||||
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| Number | Date | Patentee | Title | Type | |
| D53,658 | Jul. 29, 1919 | J.J. Holsen | Combination Tool | combination tools | |
| 1,410,993 | Mar. 28, 1922 | A.B. Carill | Chain Pipe Wrench | chain and strap wrenches | |
| 1,417,210 | May 23, 1922 | A. Shirk | Wrench | pliers type wrenches | |
| 1,420,029 | Jun. 20, 1922 | T.C. Foley | Chuck and Tool Holder | metal planer chucks | |
| 1,461,608 | Jul. 10, 1923 | T.C. Foley | Tool Holder | metal planer tool holders | |