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Sarah Burstein /
npub1nmh…8zqg
2024-09-11 14:18:25

Sarah Burstein on Nostr: D253,709 - issued in 1979 for a design for "an apparatus for indicating numerical ...

D253,709 - issued in 1979 for a design for "an apparatus for indicating numerical concepts."

Author Public Key
npub1nmhaqnfj4dw63hsj67uryq2h36sftfnk4ne6dyhvrv9jq2hyu9hsl38zqg