An Unflattened Identity and Change Knowledge Graph

G. Tubermann's Son unspecified sense

organization · 1 mention

company granted the first recorded German patent on a coffee roaster

Defining properties

Perspectives

Claims grouped by the voice that makes them.

William H. Ukers (author)

  • G. Tubermann's Son was issued german patent on coffee roaster 1877 ⟨first recorded German patent⟩
    The first recorded German patent on a coffee roaster was issued to G. Tubermann's Son in 1877
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly stated in the passage: 'The first recorded German patent on a coffee roaster was issued to G. Tubermann's Son in 1877, for "a coffee burner with vertically adjusted stirring works."' The subject, predicate, object, and date are all explicitly supported without requiring outside knowledge or over-generalization.
    • qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (the passage presents this as historical fact). The stance is 'asserts' which matches the passage's declarative presentation. The sentiment is neutral, appropriate for a factual historical statement. The time qualifier correctly specifies 1877 with valid_from matching. The context accurately reflects that this was 'the first recorded German patent' on a coffee roaster, directly from the passage. The quote is verbatim and fully supports the claim.

Change over time

1877
  • was issued german patent on coffee roaster