Patent US2907381A successfully refreshed from Google Patents.
Patent DE3421079C2 successfully refreshed from Google Patents.
DE3421079C2
Expired / Lapsed
DE
⏱️ 0.0 years remaining
DE3421079C2 - - Google Patents
Assignee: Canon Inc
•
Filing: 1984-06-06
•
Granted: 1991-03-14
•
Expires: 2004-06-06
Abstract
No abstract record available.
Inventors
- 👤 Junichi Hohya Tokio/Tokyo Jp Asano
- 👤 Hiroyuki Yokosuka Kanagawa Jp Ishii
- 👤 Otoya Yokohama Kanagawa Jp Kosugiyama
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-08 01:22
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00681; H04N1/00684; H04N1/00687; H04N1/00742; H04N1/0075; H04N1/00753; H04N1/00763; H04N1/00774; H04N1/00782; H04N1/04; H04N1/10; H04N1/1013; H04N1/1039; H04N1/1052; H04N1/1056; H04N1/38; H04N1/19; H04N1/191; H04N1/192; H04N1/193
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.