| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e2199e6f891127b11a29b35f208f8be |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T29-49815
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K2201-09063
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T29-49158
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K2201-0909
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K2201-2009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T29-49155
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T29-4979
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K2201-09781
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B26F2210-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B26D7-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K3-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K3-0052
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B26F1-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B26F1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B26D7-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B26F1-18 |
| filingDate |
1991-06-25^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_271a25c9e355a424860cb168829561ac
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5d7fd78537666ad17f923e0d47021c20 |
| publicationDate |
1992-01-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2245519-A |
| titleOfInvention |
Perforating printed circuit boards |
| abstract |
In forming perforations 4 on a printed circuit board 1 by means of press-working, the perforations being to facilitate the separation of a mother portion 2 of the board from one or more supplementary portions 3 of the board, the surface area of one or both sides of the printed circuit board 1 to be perforated is coated with copper film 5 prior to the formation of the perforations 4 in order to prevent cracks from forming around the perforations. <IMAGE> |
| priorityDate |
1990-06-26^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |