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Robert M. Gruwell
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Robert M. Gruwell
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Name/Title:
Patent Model - Improvement in Spring Bed-Bottoms
Maker and role:
Robert Gruwell, Patentee, Casey Newhouse (b.1833, d.1905), Patentee
Production date:
Feb 27 1877
Object number:
2015.14.2337a,b
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