Thermochromic thermometer
Description
FIG. 1 is a front elevational view of a thermometer showing my new design with a typical temperature readout character activated;
FIG. 2 is a side elevational view thereof, the other side being identical thereto;
FIG. 3 is a rear elevational view thereof; and
FIG. 4 is a front elevational view of another embodiment of my new design of FIG. 1 wherein another type of typical temperature readout character has been substituted for that of FIG. 1; and the rear and side views thereof are identical to FIGS. 2 and 3.
Referenced Cited
U.S. Patent Documents
D236253 | August 1975 | Parker |
2313810 | March 1943 | Dalton |
2787230 | April 1957 | Luce |
3194669 | July 1965 | Koch |
3465590 | September 1969 | Kluth |
3597976 | August 1971 | Fryar |
3898354 | August 1975 | Parker |
Patent History
Patent number: D244360
Type: Grant
Filed: Sep 8, 1975
Date of Patent: May 17, 1977
Inventor: Philip L. Van Kersen (Indianapolis, IN)
Primary Examiner: Nelson C. Holtje
Attorney: Harold R. Woodard
Application Number: 5/611,303
Type: Grant
Filed: Sep 8, 1975
Date of Patent: May 17, 1977
Inventor: Philip L. Van Kersen (Indianapolis, IN)
Primary Examiner: Nelson C. Holtje
Attorney: Harold R. Woodard
Application Number: 5/611,303
Classifications