| 1921 ARTHUR FERRON Supporting Switch Actuating Bars |
| 1921 BAYLISS JEROME Toy ARTHUR E MERKEL Patent |
| 1921 ARTHUR AHLER Doll Patent Print Art |
| 1921 WESTER ARTHUR Toy Vehicle Patent Print Art |
| 1921 BECK ARTHUR Wheeled Toy Patent Print Art |
| 1921 BROWN ARTHUR Toy Car Patent Print Art |
| 1921 ARTHUR JOCELYN SALES JOCELYN GOFF R Diaphragm Horn |
| 1921 ARTHUR SUTTON Time Fuse Patent Print Art |
| 1921 ARTHUR Fuse For Projectiles Patent Print |
| 1921 ADAMS ARTHUR Perambulator Patent Print Art |
| 1921 HOPSON ARTHUR Backband Hook Patent Print |
| 1921 ARTHUR B SULLIVAN High Altitude Flying Machine |
| 1921 ARTHUR MORRISON Hog Feeder Patent Print Art |
| 1921 ZIEBELL ARTHUR Hydroplane Patent Print Art |
| 1921 LYDA ARTHUR Life Raft Patent Print Art |
| 1921 ARTHUR E MERKEL Toy Patent Print Art |
| 1921 ARTHUR Clock Watch Timekeeping Instrument |
| 1921 BOUTON ARTHUR Sewing Machine Patent Print |
| 1921 ARTHUR Artificial Feeding Device Patent |
| 1921 CAPSTRAW ARTHUR Bumper Patent Print Art |
| 1921 WATSON ARTHUR Pinch Bar Patent Print Art |
| 1921 ETHEL E HARTMAN ARTHUR P CAMPBELL Airplane |
| 1921 ARTHUR Phonograph Sound Board Patent Print |
| 1921 UPenn ARCHITECTURE AWARD MEDAL Arthur Spayd Brooke |