Viscosity Patents (Class 73/54.01)
- With detail of temperature or pressure regulating or compensating means (Class 73/54.16)
- Using a reference fluid (Class 73/54.17)
- With means for restoring an object to its initial starting position (e.g., magnetic or fluid means) (Class 73/54.18)
- Including detail of a timing detection circuit (Class 73/54.19)
- Including an object concentricity guide means (Class 73/54.21)