Fifth wheel bearing attachment
Patent 4121853 Issued on October 24, 1978. Estimated Expiration Date: 
June 22, 1997. 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.
June 22, 1997. 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 2503530 2662799 3091501 3275390 3337277 3887251 InventorApplicationNo. 05/808796 filed on 06/22/1977US Classes:280/433, Fifth wheel only280/515, Draft pin384/421For pivot of towed vehicleExaminersPrimary: Peters, Joseph F. Jr.Assistant: McGiehan, Donn Attorney, Agent or FirmInternational ClassesB62D 53/00 (20060101)B62D 53/08 (20060101) AbstractA preassembled bearing element including a Teflon disc attachable directly to the trailer plates of existing fifth wheel rigs. | |
