Patent US1240344A successfully refreshed from Google Patents.
Patent US3073528A successfully refreshed from Google Patents.
Patent DE720647C successfully refreshed from Google Patents.
← Back to Patent Explorer
DE720647C Expired / Lapsed DE ⏱️ 0.0 years remaining

Device for measuring high-ohmic resistances and weak currents, especially for testing photocells

Assignee: Individual
•
Filing: 1939-05-11
•
Granted: 1942-05-12
•
Expires: 1959-05-11
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Dr Hans Richter

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-10-24 04:47
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50

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.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag