Need help iIdentifying window manufacture

I am looking for the manufacture of custom windows with the initials A B P on the glass. The units are about 20 years old and need repair. They have become hard to adjust and make a screeching noise when raised or lowered.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.