H01J 40/20

Photoelectric discharge tubes not involving the ionisation of a gas having photo- emissive cathode, e.g. alkaline photoelectric cell wherein a light-ray scans a photo-emissive screen

Overview Structured Data Issues Contributors Activity

data.epo.org/linked-data/def/cpc/H01J40-20

Is a

‌

Patent classification

Other attributes

Classification Type

‌

Cooperative Patent Classification

Parent Classification

‌

H01J 40/16

No article content yet.

Timeline

No Timeline data yet.

Further Resources

Title

Author

Link

Type

Date

No Further Resources data yet.

References

Find more entities like H01J 40/20

Use the Golden Query Tool to find similar entities by any field in the Knowledge Graph, including industry, location, and more.

Open Query Tool

Access by API