An Unflattened Identity and Change Knowledge Graph

Henry B. Stevens inventor

person · 1 mention

Inventor who patented cleaning and grading machinery for coffee

Other senses of “Henry B. Stevens”

unspecified

Defining properties

Perspectives

Claims grouped by the voice that makes them.

William H. Ukers (author)

  • assigned them to the Geo. L. Squier Manufacturing Co.
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly stated in the passage: 'Several important cleaning and grading machinery patents were granted by the United States (1876-1878) to Henry B. Stevens, who assigned them to the Geo. L. Squier Manufacturing Co., Buffalo, N.Y.' The subject, predicate, and object are all explicitly mentioned with exact wording.
    • qualifier_fidelity 0.85 pass — The claim is largely faithful to the passage. The quote is verbatim and supports the predicate. Viewpoint, stance, and sentiment are all appropriate. However, there is a minor issue with the time qualifier: the passage states patents were granted "(1876-1878)" and then "assigned them to" the company, which indicates the assignment occurred after or within this period. The valid_from date of 1876 is reasonable but imprecise since the passage doesn't specify exactly when the assignment occurred relative to the patent grants. This is a minor qualifier fidelity issue but not severe enough to fail the claim, as 1876 is a defensible interpretation of the temporal range given.