Tilt Latch replacement

A home owner from Lorton, VA says:
RSVP double hung window tilt.

Can you tell me where I can buy this latch?

Pat. # 5.139.297 .092
User submitted picture of tilt latch.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting! Unfortunately, I'm having a bit of trouble identifying what latch that is. If at all possible, can you take a picture of it lying flat down, so that I can see the shape of its tip? Also, please provide dimensions. Off the bat though, I do believe it may be our 26-243 and 26-244 style tilt window latch.
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