Channel Catalog for Sub-section 9:
- (Free Patents Online: Needle and pin making),
- (Free Patents Online: Tool driving or impacting),
- (Free Patents Online: Boring or penetrating the earth),
- (Free Patents Online: Type casting),
- (Free Patents Online: Elongated-member-driving apparatus),
- (Free Patents Online: Whips and whip apparatus),
- (Free Patents Online: Aeronautics),
- (Free Patents Online: Wire fabrics and structure),
- (Free Patents Online: Fences),
- (Free Patents Online: Active solid-state devices (e.g., transistors, solid-state diodes)),
- (Free Patents Online: Railway mail delivery),
- (Free Patents Online: Plastic and nonmetallic article shaping or treating: processes),
- (Free Patents Online: Typesetting),
- (Free Patents Online: Land vehicles: animal draft appliances),
- (Free Patents Online: Track sanders),
- (Free Patents Online: Railway wheels and axles)