| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 2939-2939 | Communication device is a subclass of engineering component |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 1798-1798 | Microphone is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 1802-1802 | Receiver device is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 1814-1814 | Telegraph is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 1819-1819 | Projection screen is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 2952-2952 | Telephone is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 2996-2996 | Fax machine is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 15823-15823 | Antenna is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 24562-24562 | Telephony device is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 850-850 | Data display device is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 21-21 | Communication radio is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 47-47 | Main telephone line is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 120-120 | Communication satellite is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 173-173 | Telex is a subclass of communication device |
| No TPTP formula. May not be expressible in strict first order. | Communications.kif 219-219 | Broadcasting station is a subclass of communication device |
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