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| Patents for Warren W. Philbrick | |||||
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| Number | Date | Patentee | Title | Type | |
| 629,814 | Aug. 01, 1899 | W.W. Philbrick | Matcher-head | cutterheads | |
| 633,153 | Sep. 19, 1899 | W.W. Philbrick | Matcher-head | cutterheads | |
| 633,154 | Sep. 19, 1899 | W.W. Philbrick | Matcher-head | cutterheads | |
| 651,512 | Jun. 12, 1900 | W.W. Philbrick | Matcher-head | cutterheads | |
| 681,458 | Aug. 27, 1901 | W.W. Philbrick | Matcher-head | cutterheads | |
| 681,459 | Aug. 27, 1901 | W.W. Philbrick | Matcher-head | cutterheads | |
| 906,921 | Dec. 15, 1908 | W.W. Philbrick | Cutter-head | cutterheads | |