| 1899 HOLT Propelling Tool Mechanism Patent 50197 |
| 1959 HOLT Rear View Mirror Mount Patent Print |
| 1939 HOLT JOHN Toy Railway Patent Print Art |
| 1939 HOLT Display Container SHEAFFER Patent 31770 |
| 1921 HOLT JOSEPHINE Abdominal Supporter Patent |
| 1926 LAURENCE HOLT Game Patent Print Art |
| 1956 ETHEL HOLT Brassiere Patent Print Art |
| 1923 HOLT Automobile Towing Frame Patent Print |
| 1920 SHERWIN HOLT Parachute Flare Patent Print |
| 1835 HOLT Clover Huller Machine Patent 52389 |
| 1944 HOLT Surface Marking Signal Patent Print |
| 1907 HOLT FOSTER Lamp Shade LIVERMORE Patent 38992 |
| 1929 HOLT Costumer Ladder Truck Patent Print Art |
| 1922 HOLT MFG CO Land Torpedo Patent Print Art |
| 1938 HOLT GUS Tattoo Marker Patent Print Art |
| 1940 HOLT Floor Surfacing Machine Patent 13249 |
| 1969 HOLT Aircraft Pressurization System Patent |
| 1921 J A B HOLT Sewing Machine Patent Print Art |
| 1932 HOLT Kiddie Propelled Merry Go Round Patent |
| 1911 HOLT Fuel Saving Orchard Heater Patent 43750 |
| 1952 HOLT Football Blocking Protector Patent 47214 |
| 1965 HOLT PLINY Loft Bombing System Patent Print |
| 1964 HOLT PLINY Loft Bombing System Patent Print |
| 1949 HOLT HARRY Exploding Ship Toy Patent Print |
| 1968 HOLT HARLEY Air Pump Assembly Patent Print |
| 1952 HOLT Hand Glare Shield Design Patent 32111 |
| 1902 HOLT Applicator Uterine Patent 18545 |
| 1927 HOLT VICTOR Blasting Device Patent Print |
| 1923 SHERWIN HOLT Parachute Patent Print Art |
| 1953 HOLT JR Climbing Toy Patent Print Art |
| 1947 HOLT HAROLD Fuel Container Patent Print Art |
| 1921 HOLT MFG CO Anti Aircraft Gun Mount Patent |
| 1923 HOLT Bust Confiner And Reducer Patent Print |
| 1922 HOLT MFG CO Gun Mount Brake Patent Print |
| 1952 HOLT Propeller Reversing Throttle Patent |
| 1931 HOLT JOSEPHINE Abdominal Support Patent |
| 1956 HOLT Toy Aircraft Launching Patent Print |
| 1938 HOLT THOMAS Window Construction Patent |
| 1931 HOLT Doll Handkerchief Patent Print Art |
| 1921 ERNEST HOLT Flying Machine Patent Print Art |