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| All Patents in class 60/516 | |||||
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| Number | Date | Patentee | Title | Type | |
| 111,088 | Jan. 17, 1871 | A.K. Rider | Air Engine | hot air engines | |
| 2,185,978 | Jan. 02, 1940 | E.J. Dillman | Heating Apparatus | heating apparatus | |