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| All Patents in class 110/173R | |||||
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| Number | Date | Patentee | Title | Type | |
| 120,325 | Oct. 24, 1871 | A.K. Rider | Improvement in Air Engines | hot air engines | |
| 4,576,574 | Mar. 18, 1986 | R.E. Schantz | Gas Horseshoe Forge | portable forges | |