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based on the expansion or contraction of a material
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CPC
H01H43/301
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Parent Industries
H
ELECTRICITY
H01
Electric elements
H01H
ELECTRIC SWITCHES RELAYS SELECTORS EMERGENCY PROTECTIVE DEVICES
H01H43/00
Time or time-programme switches providing a choice of time intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
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H01H43/301
based on the expansion or contraction of a material
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Patents Grants
last 30 patents
Information
Patent Grant
2402240
Patent number
2,402,240
Issue date
Jun 18, 1946
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
CPC
H01H43/301
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