There have been a number of glass companies that used a letter G for their logo. It can also depend of the time frame in which the glass was produced.
The Society for Historical Archaeology, Inc. (sha.org) website has a selection for 'Historic Bottle Identification'. Under that selection, at the bottom of the page, is an alphabetical listing for 'Makers Markings Logo Tables'. Give it a try.
I have some glasses with that sign, that I thougt were initials. Found it after a long, long search: Imperial Glass Ohio. (it's not an arrow it's the letter "i").
General Electrics. They use the GE.
J G is likely the manufacturer's mark for Jeannette Glass Company, a glassware manufacturer that operated from 1887 to 1983 in the United States. They produced a variety of glass items, including kitchenware and decorative pieces.
The ovc actually if you look closer the c is a g and stands for Fenton glass' company's Olde Virginia Glass line made in West Virginia
ivory soap
To make glass panes on Minecraft, you need 6 glass. These are best used as windows. Here is the crafting recipe for it: G = Glass N = Nothing N N N G G G G G G
They have a trademark for that particular, stylized G. The letter G is still free for everyone to use.
Glass
"G'
glass
To prepare 0.30 kg of glass, you would need to start with at least 0.30 kg of SiO2 because silica (SiO2) is one of the main components of glass. Keep in mind that the actual amount of SiO2 required might be slightly higher to account for losses during the glass-making process.
glass mirrorgel (shower gel)glass mirror
Hannspree owns the company Hanns-G