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Patents for R. B. Robbins | |||||
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Number | Title | Classification(s) | |||
81,511 | Improved brick-machine | 425/220, 425/443 | |||
100,541 | Woodworker's Leg Vise Jaw | 269/261, 269/262, 269/285 | |||
124,590 | Improvement in brick-machines | 425/309 | |||
172,271 | Improvement in horseshoe-calking vises | 168/46, 72/460 | |||
202,948 | Improvement in brick and tile machines | 425/190, 425/307 | |||
363,588 | Stump-sawing machine | 83/754, 83/769 |