US 4,434,467 · Granted 1984-02-28
Hair coloring calculator
A device for determining the hair coloring products to be used to change the user's present hair color to a new hair color. The device includes a keyboard for entering a designation which identifies the user's present hair color and the desired hair color. The user also enters data to identify the particular line of hair coloring products which the user desires to use. The device then responds to such data by displaying the designations of hair coloring products of the chosen line which will change the user's present hair color to the new hair color.
Patent details
- Publication number
- US 4,434,467
- Filing date
- 1981-03-30
- Grant date
- 1984-02-28
- Assignee
- Dale Scott
- Inventor(s)
- SCOTT; DALE
- CPC class
- G03B21/10
Want to file your own patent?
Run your idea through our free scanner — we’ll show you which existing patents are conceptually closest, including this one if it’s a match.
Free patentability scanRelated patents in this cluster
- US 7,419,321: Hand applicator of encapsulated liquids
- US 4,828,542: Foam substrate and micropackaged active ingredient particle composite dispensing materials
- US 5,250,071: Detachable embolic coil assembly using interlocking clasps and method of use
- US 6,350,276: Tissue remodeling apparatus containing cooling fluid