| 1930 BURNELLI Airfoil Control Means Patent Print |
| 1930 PIETER Means For Handling Lifeboats Patent |
| 1930 CARPENTER Car Lifting Means Patent Print |
| 1930 HINCKLEY Sound Amplifying Means Patent |
| 1930 AXEL Bracing Means For House Cars Patent |
| 1930 REED Energy Transmission Means Patent Print |
| 1930 MINK Gun Discharging Means Patent Print Art |
| 1930 VON Clamping Means Patent Print Art |
| 1930 DOERR MFG COMPANY Securing Means Patent |
| 1930 KLASING AUGUSTUS Winding Means Patent Print |
| 1930 LIVINGSTON Anchoring Means Patent Print Art |
| 1930 ROEDDING GORDON Securing Means Patent Print |
| 1930 OSTEN Vehicle Control Means Patent Print |
| 1930 VON TELL Clamping Means Patent Print Art |
| 1930 ROSS Means For Securing Name Plates Patent |
| 1930 RICHARD Toy Blocks Connecting Means Patent |
| 1930 LANGE Resonating Means For Banjos Patent |
| 1930 CUSTER Safety Retaining Means Patent Print |
| 1930 BRAUNING Automobile Lock Means Patent Print |
| 1930 GARDNER DENVER CO Car Lifting Means Patent |
| 1930 MCINTOSH Ship Propelling Means Patent Print |