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| Patents for Lawrence Zamboni | |||||
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| Number | Date | Patentee | Title | Type | |
| 786,616 | Apr. 04, 1905 | L. Zamboni | Roller-stand for switch-rods | railroads | |
| 828,698 | Aug. 14, 1906 | L. Zamboni | Pulley-frame | door and window hardware | |
| 828,699 | Aug. 14, 1906 | R.H. Bowen, L. Zamboni | Pulley-frame | door and window hardware | |