Hat Holders: August 6, 1946
Ozite Rug Pad: August 6, 1946
Reservoir Oil Drain - Prop: April 15, 1953
Sealing Cabin Windows: April 15, 1953
Clearing Hydraulic Brake Hose: June 1, 1953
Landing Lights: October 26, 1951
Reverse Current Relay: July 15, 1952
Reverse Seating for Reclining Chair: July 15, 1954
Reverse Current Relay/Voltage Regulator: September 9, 1946