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| Patents for John Robert Ingham | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-190,821,428 | Sep. 16, 1909 | J.R. Ingham | Improvements in milling cutters | milling machine cutters | |
| GB-197,541 | May 17, 1923 | J.R. Ingham | Improvements in die heads for screwing machines | metal threading machines | |
| GB-205,274 | Oct. 18, 1923 | J.R. Ingham | Improvements in horizontal spindle plano milling machines | milling machines | |
| GB-300,389 | Nov. 15, 1928 | J.R. Ingham | Improvements in or connected with screwing machines | pipe threading machines | |