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Patents for John P. Worthing | |||||
Number | Date | Patentee | Title | Type | |
106,937 | Aug. 30, 1870 | R.D. Hobart | Improvement in sash and blind-machine | window making machines | |
173,069 | Feb. 01, 1876 | M.W. Shapley | Improvement in governors for steam-engines | steam engine governors |