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| Patents for Emerson P. Brownell | |||||
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| Number | Date | Patentee | Title | Type | |
| 105,250 | Jul. 12, 1870 | J.F. Rider, E.P. Brownell | Improvement in spool-machines | spool or bobbin machines | |
| 113,798 | Apr. 18, 1871 | J.F. Rider, E.P. Brownell | Machine for boring spools | drilling and boring | |
| 409,665 | Aug. 27, 1889 | E.P. Brownell | Spool machine | specialty woodworking machines | |
| 663,214 | Dec. 04, 1900 | E.P. Brownell | Automatic spool machine | spool or bobbin machines | |