| X Number | Date | Inventor | City | Title |
|---|---|---|---|---|
| XC-2987 | 1869-01-16 | R. A. Ptolemy | Tapleytown, ON Canada | Rotary steam engine |
| J. Ptolemy | Tapleytown, ON Canada |
Tapleytown was near Hamilton. XC patents are Canadian patents issued between 1824 and 1869.
(To be filled in.)