| 1878 BERTRAM Writing Pen Design Patent 12022 |
| 1962 BERTRAM HENRY Fish Attractor Patent Print |
| 1924 WILSON BERTRAM Game Of Skill Patent Print |
| 1927 WORK BERTRAM Reducing Garment Patent Print |
| 1996 BERTRAM Piano Like Computer Keys IBM Patent 41820 |
| 1955 BERTRAM Collapsible Miniature Stage Patent |
| 1927 BERTRAM EGLEY Life Belt Patent Print Art |
| 1930 BERTRAM Aeroplane Control Apparatus Patent |
| 1961 BERTRAM ROBERT Toy Vehicle Patent Print Art |
| 1926 BERTRAM EGLEY Life Buoy Patent Print Art |
| 1934 VALENTINE BERTRAM Locomotive Patent Print |
| 1924 BERTRAM S FENNER Air Gun Patent Print Art |
| 1930 BERTRAM EATON Sewing Machine Patent Print |
| 1940 BERTRAM WM COLTMAN Game Patent Print Art |
| 1961 BERTRAM Releasable Connectors Patent Print |
| 1935 BERTRAM Aquatic Amusement Device Patent |
| 1931 BERTRAM Internal Geared Tuning Peg Patent |
| 1921 GRACE BERTRAM Signaling System Patent Print |
| 1935 BERTRAM Artificial Bait Or Fish Lure Patent |
| 1925 BERTRAM BOOTY Amplifying Horn Patent Print |
| 1937 BERTRAM STIRN Reed Wiper Patent Print Art |
| 1947 MILLEVILLE BERTRAM Car Truck Patent Print |