pt (patent) fa (firearms) mfg (manufacturer)
I believe 'pt' stands for patent, as in Colt patent firearms
Nothing.
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.
I have one that has the patent date on the bottom of it. "July 4th 1899"
mfg.
mfg. about 1875
Mfg is an abbreviation for Manufacturing that is used in the name of a company.Example: Fortner Engineering & Mfg
what happened to Paterson brass mfg. co.crs mfg co.inc
when was this luger Mfg,Serial # 2869
Mfg. means "manufacturing".
MFG as a Roman numeral doesn't exist