STAIR CLIMBING DOLLY

• US 3,515,401 A
• Filed: 11/06/1968
• Issued: 06/02/1970
• Est. Priority Date: 11/06/1968
• Status: Expired due to Term

• Current Assignee: Eshcol S. Gross
• Original Assignee: Eshcol S. Gross
• Inventors: Gross, Eshcol S.
• Application Number:
  US04/773,921
• Time in Patent Office: 573 Days
• US Class Current: 280/5.26
• CPC Class Codes: B62B 2203/44 Clamping or supporting circumferentially
• CPC Class Codes: B62B 2301/256 by using endless belts
• CPC Class Codes: B62B 5/02 providing for travelling up or down a flight of stairs chairs or multi-track cycles specially adapted for invalids A61G5/00
• CPC Class Codes: B62B 5/026 with spiders or adapted wheels

Claims