Skip to content

The Duck & Game Call Patent Archive

Patents that talked to the birds

Browse Dates Inventors Types About

Accordion air bladder

Patent drawing of a collapsible duck decoy shown in side and sectional views, with a pivoting duck head, telescoping oval body sections, and a U-shaped weighted wire beneath the body used for balancing and locking.

DECOYGordon W. Dennett · March 14, 1922

United States patent drawings and specifications are works of the U.S. government and are in the public domain — they were never copyrighted. Download them, print them, frame them. Our commentary and descriptions are © 2026 The Duck & Game Call Patent Archive.

About · Terms · Privacy · Corrections welcome — this archive gets better when collectors write in.