Digital direct-sequence spread-spectrum modem
Patent 4894841 Issued on January 16, 1990. Estimated Expiration Date: 
June 23, 2008. 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 23, 2008. 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 Re32905 Satellite communications system and apparatus Covert communication system Patent #: 4607375 InventorsApplicationNo. 210725 filed on 06/23/1988US Classes:375/141End-to-end transmission systemExaminersPrimary: Cangialosi, SalvatoreAttorney, Agent or FirmInternational ClassH04L 009/00Foreign Application Priority Data1987-06-26 ITAbstractA direct-sequence digital spread spectrum modem in which the given functions are implemented by software algorithms utilizing a microprocessor architecture. The modem is especially effective for telesurveillance, teledetection, telemonitoring, telecontrol and telecommunications generally.Other References
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