Patent DE679857C successfully refreshed from Google Patents.
DE679857C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Arrangement for observation and control of the electron-optical images occurring in the beam path of an electron microscope with two or more electron-optical magnification levels
Assignee: BODO VON BORRIES DR ING
•
Filing: 1932-03-17
•
Granted: 1939-08-15
•
Expires: 1952-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 10:47
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/26; H01J37/02; H01J37/22; H01J37/224; H01J2237/00; H01J2237/248; H01J2237/2482
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.