Inventor
LEHAN FRANK W
5 patents
⚠️ This page may combine multiple inventors who share the name “LEHAN FRANK W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SYSTEM DEV CORP
4 patentsUS4045814AAug 30, 1977
Method and apparatus for scrambling and unscrambling communication signals
SYSTEM DEV CORP122 citations92
US4019201AApr 19, 1977
Method and apparatus for scrambling and unscrambling communication signals
SYSTEM DEV CORP117 citations92
US4462081AJul 24, 1984
Signal processing system
SYSTEM DEV CORP22 citations79
US4024576AMay 17, 1977
Method and apparatus for scrambling and unscrambling communication signals
SYSTEM DEV CORP8 citations70