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| Patents Granted on 1833-05-06 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,568X | May 06, 1833 | L. Disbrow | Combined furnace and steam boiler | stationary boilers | |
| 7,569X | May 06, 1833 | L. Disbrow | Combined furnace | ||
| 7,570X | May 06, 1833 | S.H. Long | Boilers for generating steam and wheels for locomotive engines | stationary boilers | |