ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,487, issued on Feb. 24.
"Collapsible syringe plunger and syringe incorporating same" was invented by Anthony C. Pezzulli (Fairview, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A plunger for a syringe comprises a stem portion with a longitudinally extending groove that receives an extension portion. The extension portion sits at least partially within the groove when a space-saving, collapsed configuration is desired. When a user is ready to elongate the plunger and/or use a syringe containing the plunger, the extension portion can slide within the groove to lengthen the plunger until a locking mechanism is engaged."
The patent was filed on...