On line dating research design
Profiles are available for the Nation, states, counties, and places.
Quick Facts also provides links to more detailed information.
With patented designs you can search for listings with “patent” or “pat” in the title to find similar pieces and price ranges.
Since then, lesser quality jewelry has been mass produced and sold on Trifari cards without any stamps on the jewelry.
Recently, some necklaces have been produced overseas with a new Trifari hang tag, but these are not vintage pieces.
After 1955, the copyright law was changed to include jewelry designs.
After that time, jewelry companies no longer had to patent their designs.
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Alfred Philippe remained as Trifari’s head designer until his retirement in 1968, and his wonderful patented designs can still be found today among Trifari vintage jewelry sellers and collectors.