Power line communication system
Patent 4772870 Issued on September 20, 1988. Estimated Expiration Date: 
November 20, 2006. 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.
November 20, 2006. 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 ReferencesCoupling arrangement for power line carrier systems Powerline carrier control system Power line communication system utilizing a local oscillator Patent #: 4538136 InventorApplicationNo. 06/933226 filed on 11/20/1986US Classes:725/79, Using existing power network330/195, Transformer coupled340/310.12, Modulation technique340/310.13, Noise reduction (e.g., filtering)340/310.18, With coupling plug455/124Distributed parameter deviceExaminersPrimary: Crosland, Donnie L.Attorney, Agent or FirmInternational ClassesH04H 1/02 (20060101)H04B 3/54 (20060101) H04H 1/14 (20060101) H04N 7/10 (20060101) AbstractA low-level, low-power radio frequency (RF) communications system designed to operate as a point-to-point power line communications sytem (PLC) utilizing frequencies from 50 to 600 MegaHertz (MHz) superimposed onto the AC power signal in a building. | |
