Assignee
SPEEDCALL CORP
2 granted patents·2 citations·filing 1974–1975
Top patents by PatentIndex Score
2 records- 0129US4014001AAddressable signalling apparatus having master calling feature with output latches and wrong digit rejectSPEEDCALL CORP·Filed 1975·Granted Mar 22, 1977·2 cites·6 claims
- 0226US3943490AAddressable signalling apparatus having master calling feature with output latches and wrong digit rejectSPEEDCALL CORP·Filed 1974·Granted Mar 9, 1976·0 cites·7 claims
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