03954011 is referenced by 67 patents and cites 8 patents.

Indicating device suitable for visibly measuring parameters such as time, temperature, and time-temperature relationships. The device includes a porous fluid carrying pad, a wick material for said fluid, and an indicator means whereby the progress of fluid along the wick material can be visibly indicated and used to measure the passage of time, the exposure to a given minimum temperature, or a time-temperature relationship. The combination is adapted to regulate migration of fluid from the fluid source to the wick material.

Title
Selected time interval indicating device
Application Number
400044
Publication Number
3954011
Application Date
October 10, 1973
Publication Date
May 4, 1976
Inventor
Wendell J Manske
Birchwood
WA, US
Agent
Alexander Sell Steldt & DeLaHunt
Assignee
Minnesota Mining and Manufacturing Company
MN, US
IPC
G01K 11/06
G01K 11/16
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