Drawing for GREEN'S ECONOMISERS

USPTO serial 72252779

GREEN'S ECONOMISERS

Reviewed by CopyMark Law Group

Reg. 0843200Status 900
Filing date
Status date
Registration date
Jan 30, 1968
Examiner
Law office
FILE DESTROYED

What this means

This page summarizes the public USPTO record for this serial number, including owners, goods and services, and prosecution history.

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Owner

Goods and services

ClassDescriptionStatusFirst use
034HEAT EXCHANGERS DESIGNED TO HEAT THE FEED WATER FOR A STEAM BOILER BY WASTE HEAT IN THE FURNACE GASSES PASSING FROM THE BOILER TO THE CHIMNEYEXPIRED

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Prosecution history

DateCodeEventWhat it means
Nov 3, 1992EXRGEXPIRED SEC. 9

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