All Patents in class 33/282


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All Patents in class 33/282
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
44,225	Sep. 13, 1864	H.S. Shepardson	Improvement in Spirit-Levels	levels
313,657	Mar. 10, 1885	W.L. Curtis	Surveying Instrument	surveying apparatus
360,321	Mar. 29, 1887	F.j. Miller	Transit Instrument	surveying apparatus