Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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US Patent 4384688 - Self-storing cord and hose reel assemblies
US Patent Issued on May 24, 1983
Estimated Patent Expiration Date:
May 26, 2001Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
May 26, 2001Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA reel for storing an extendable, retractable electrical power cord, signal cable or fluid conducting hose wherein electrical or fluid continuity is maintained throughout the process of storage and extension of the device without resort to the use of brushes, slip rings or relatively movable couplings. | InventorAssigneeApplicationNo. 06/266726 filed on 05/26/1981US Classes:242/378.2, End segment anchored191/12.2R, Reels242/379, Particular frame or frame carrier242/385.1Material movement responsive (e.g., window shade type)ExaminersPrimary: Jillions, John M.Attorney, Agent or FirmUS Patent References2518071, 2551149, 2656991, 2976374, 3056863, 3144218, 3167160, 3337695, 3450369, 3895764International ClassesB65H 75/38 (20060101)B65H 75/44 (20060101) B65H 75/40 (20060101) G02B 6/36 (20060101) H02G 11/00 (20060101) H02G 11/02 (20060101) |
