Assignee
CREST IND
15 granted patents·848 citations·filing 1975–1993
Top patents by PatentIndex Score
15 records- 0192US4059321APull-out receptacle for floor ductsCREST IND·Filed 1976·Granted Nov 22, 1977·80 cites·27 claims
- 0289US5237611AEncryption/decryption apparatus with non-accessible table of keysCREST IND·Filed 1992·Granted Aug 17, 1993·193 cites·29 claims
- 0389US4040699AFemale connector and escutcheon plate combined therewith for telephone equipmentCREST IND·Filed 1976·Granted Aug 9, 1977·55 cites·8 claims
- 0485US5301247AMethod for ensuring secure communicationsCREST IND·Filed 1992·Granted Apr 5, 1994·141 cites·20 claims
- 0584US5455862AApparatus and method for encrypting communications without exchanging an encryption keyCREST IND·Filed 1993·Granted Oct 3, 1995·144 cites·25 claims
- 0683US4228324AKey telephone system having interstation signalling during hold conditionCREST IND·Filed 1979·Granted Oct 14, 1980·25 cites·10 claims
- 0783US4218590AKey telephone system having automatic exclusion circuit for line privacyCREST IND·Filed 1979·Granted Aug 19, 1980·27 cites·10 claims
- 0880US5222136AEncrypted communication systemCREST IND·Filed 1992·Granted Jun 22, 1993·120 cites·20 claims
- 0974US4132860AHold control for a key telephone systemCREST IND·Filed 1977·Granted Jan 2, 1979·16 cites·24 claims
- 1066US4323734AInterface circuit for telephone line to equipment signal couplingCREST IND·Filed 1980·Granted Apr 6, 1982·18 cites·17 claims
- 1161US4133985AKey telephone systemCREST IND·Filed 1977·Granted Jan 9, 1979·12 cites·7 claims
- 1258US4055737ATerminal block assembly for mounting a switch or other electrical componentCREST IND·Filed 1975·Granted Oct 25, 1977·9 cites·35 claims
- 1346US4061888AControl unit mounting and interconnecting apparatus for telephone setsCREST IND·Filed 1976·Granted Dec 6, 1977·5 cites·10 claims
- 1441USD274143STelephone equipment female connector for mounting in apertured escutcheon plateCREST IND·Filed 1982·Granted Jun 5, 1984·3 cites·1 claims
- 1531USD273293STelephone face plateCREST IND·Filed 1981·Granted Apr 3, 1984·0 cites·1 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →