I'm sorry, but I don't have specific information about the "expertlamp mfg co" or its establishment date. If you are looking for details about a particular company, I recommend checking their official website or business registration records for accurate information.
I have an ammeter with the inscription "Eldredge Electric Mfg Co, Springfield, Mass" with a patent date of December 22, 1903, so the answer to your question is yes.
what happened to Paterson brass mfg. co.crs mfg co.inc
Made in 1878 located at Colt Mfg Co. in Hartford,CT
Clinton, Missouri
colt mfg co.
manufacturing
read the slide again. it probably says '45' not 48. also on the right side is a serial number. that will indicate date of mfg. date of mfg. and condition helps to give a value..................
i have a candelstick holder marked with wb meg co 220c
85.00
lacking more of a description, 100-10000 USD
barrry shellenhamer
1959 , 1963