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| Patents for Phillip J. Darlington | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,541,796 | Jun. 16, 1925 | P.J. Darlington | Micrometer Caliper | micrometers | |
| 1,593,753 | Jul. 27, 1926 | P.J. Darlington | Micrometer Caliper | micrometers | |
| 1,631,019 | May 31, 1927 | P.J. Darlington | Micrometer Calipers | micrometers | |
| 1,652,854 | Dec. 13, 1927 | P.J. Darlington | Micrometer Caliper | micrometers | |