| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ec22d2a8d1659d2531235058cff842ef |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B19-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B17-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B19-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B17-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B13-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B13-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-08 |
| filingDate |
1980-01-25^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1981-09-15^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3a91bbb816db8bf1440ee9f28658fe7c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b3034cf8b9dd7ddb666375cd9e0997c0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60d95621c5cd84c2b0205362ded35ff7 |
| publicationDate |
1981-09-15^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4289392-A |
| titleOfInvention |
Pentagonal roof reflecting mirror assembly |
| abstract |
A hollow pentagonal roof type reflecting mirror assembly for use in a viewfinder optical system of a single lens reflex camera is dust tight to prevent entry of dust into the inside hollow space and includes a filtered vent aperture to allow passage of vapor so that condensation will not occur inside the assembly. The assembly includes a hollow pentagonal body having roof and front mirrors and at least one vent aperture and a shielding or sealing member arranged to close the vent hole. The shielding or sealing member is made of a dust proof and ventilative material such as a foamed plastic, a paper and a cloth to filter out any dust particles. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11369198-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011097070-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6715427-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5041854-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8358923-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100815340-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11672340-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100815351-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5555468-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6052533-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6435105-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4000448-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5991103-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113885111-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5136427-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5604554-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8170407-B2 |
| priorityDate |
1979-02-01^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |