IMAGE
Ways of producing cobalt filaments for electric light bulbsItem Info
- Title:
- Ways of producing cobalt filaments for electric light bulbs
- Swedish Patent ID:
- 37969
- Title in Swedish:
- Sätt att framställa glödtrådar av kobolt för elektriska glödlampor
- Priority patent in Japan:
- 金澤式「コバルト」電燈用纎條製造法
- Application Date:
- 1913-07-15
- Patentee:
- Kiyoe Tanimura
- Inventor:
- Kanazawa Chouemon
- Patent Class:
- Electrical engineering
- Description of the Image:
- The factory of Toyo Electric Co., manufacturing more than five thousand “Tanimura-style” light bulbs per day
- Location:
- Tokyo
- Latitude:
- 35.652832
- Longitude:
- 139.839478
- Source:
- 北川由之助 編『日本之精華』,毎日通信社,大正3. 国立国会図書館デジタルコレクション https://dl.ndl.go.jp/pid/980768 (参照 2023-12-06)