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Patents for R. B. Robbins
Patents 1 - 6 of 6
First set of recordsLast set of records
NumberTitleClassification(s)
81,511Improved brick-machine425/220, 425/443
100,541Woodworker's Leg Vise Jaw269/261, 269/262, 269/285
124,590Improvement in brick-machines425/309
172,271Improvement in horseshoe-calking vises168/46, 72/460
202,948Improvement in brick and tile machines425/190, 425/307
363,588Stump-sawing machine83/754, 83/769
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