JPS527670A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Automatic focus control method for electron beams
Assignee: Victor Company of Japan Ltd
•
Filing: 1975-07-08
•
Granted: —
•
Expires: 1995-07-08
Abstract
Abstract PURPOSE: A focus control method with an excellent operationability and capable of automatic control with a sufficient tracking performance for the great focal changes. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Muneharu Kayanuma
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-09 06:45
CPC Classifications
—
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.