Hypodermic syringe

• US 2,545,017 A
• Filed: 06/02/1947
• Issued: 03/13/1951
• Est. Priority Date: 06/02/1947
• Status: Expired due to Term

• Current Assignee: Gordon D. Billingsley
• Original Assignee: Gordon D. Billingsley
• Inventors: Billingsley, Gordon D.
• Application Number:
  US02/751,742
• Time in Patent Office: 1,380 Days
• US Class Current: 604/143
• CPC Class Codes: A61M 2005/2407 from the rear
• CPC Class Codes: A61M 5/2053 Media being expelled from injector by pressurised fluid or vacuum for infusion A61M5/145, A61M5/155
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: A61M 5/2459 upon internal pressure increase, e.g. pierced or burst A61M5/2429 takes precedence

Claims