Knockdown sign tubular interlocking device

Details Knockdown sign tubular interlocking device Knockdown sign tubular interlocking device

1978-07-10

1980-07-01

Pitrelli, John F.

Card, picture, or sign exhibiting

Signs

Sign support

40155, 40610, G09F 718

Patent

active

042099277

ABSTRACT:
A knockdown sign lockup device having a tubular interlocking ring for inserting in the top of a tubular signpost and engaging a slot in the top of a wing off the signboard extending within the tubular post for lockup of the signboard with the signposts.

REFERENCES:
patent: 1909651 (1933-05-01), Bower
patent: 4068398 (1978-01-01), Parisi

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