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Antiques! => Antique Questions Forum => Topic started by: valhom on March 24, 2016, 10:37:13 AM

Title: Vintage Pittsburgh Plate Glass Co. Non Glare Glass Advertisement in Cardboard
Post by: valhom on March 24, 2016, 10:37:13 AM
Measures approx. 18" x 16.5". I couldn't find anything like it on eBay nor Google image search, etc. Is this rare, since it's still in an advertisement form? Collectible? Contains real glass in it. Thank you!
Title: Re: Vintage Pittsburgh Plate Glass Co. Non Glare Glass Advertisement in Cardboard
Post by: KC on March 24, 2016, 01:20:53 PM
PPG History
http://corporate.ppg.com/Our-Company/company-history.aspx (http://corporate.ppg.com/Our-Company/company-history.aspx)

The only Non-Glare Glass patent I could find for PPG was 1985
http://www.google.com/patents/US4636439 (http://www.google.com/patents/US4636439)
Title: Re: Vintage Pittsburgh Plate Glass Co. Non Glare Glass Advertisement in Cardboard
Post by: valhom on March 24, 2016, 01:29:04 PM
Quote from: KC on March 24, 2016, 01:20:53 PM
PPG History
http://corporate.ppg.com/Our-Company/company-history.aspx (http://corporate.ppg.com/Our-Company/company-history.aspx)

The only Non-Glare Glass patent I could find for PPG was 1985
http://www.google.com/patents/US4636439 (http://www.google.com/patents/US4636439)

Thank you for your help with the company history information and the patent you found. I really appreciate it.  8)
Title: Re: Vintage Pittsburgh Plate Glass Co. Non Glare Glass Advertisement in Cardboard
Post by: mart on March 24, 2016, 06:12:36 PM
https://www.google.com/patents/US3326715

Here is one from 1963 !!  I think they had several patents for similar glass !!
Title: Re: Vintage Pittsburgh Plate Glass Co. Non Glare Glass Advertisement in Cardboard
Post by: KC on March 24, 2016, 10:51:10 PM
Thanks Mart!  My internet has been wacky during/after the storms!
Title: Re: Vintage Pittsburgh Plate Glass Co. Non Glare Glass Advertisement in Cardboard
Post by: valhom on March 25, 2016, 12:57:35 AM
Quote from: mart on March 24, 2016, 06:12:36 PM
https://www.google.com/patents/US3326715

Here is one from 1963 !!  I think they had several patents for similar glass !!

Thanks! Much appreciated, Mart.  ;)
Title: Re: Vintage Pittsburgh Plate Glass Co. Non Glare Glass Advertisement in Cardboard
Post by: mart on March 25, 2016, 09:07:38 AM
That was the one that sounded closest to the ad !!  They also revised or improved glass they already held a patent on so hard to figure when the original was issued !!