12 Hour coaster
Patent 4089498 Issued on May 16, 1978. Estimated Expiration Date: 
May 16, 1995. Estimated 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.
May 16, 1995. Estimated 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.Patent References 2118326 2652703 2688858 2709905 3808084 3836416 InventorApplicationNo. 769789 filed on 02/17/1977US Classes:248/346.11Coaster or caster cupExaminersPrimary: Parsons, Marion Jr.Attorney, Agent or FirmInternational ClassA47G 029/02AbstractA coaster for containers of hot or cold liquids that more effectively insulates the container from both the outer walls and base of the coaster, and that does so for longer periods of time of continuous use than known devices. Among other features, the coaster impedes the formation of condensate water on its outside walls and base, and provides an improved non-adhering adsorbent layer to receive and contain the container and receive the condensate drained from its walls. | |
