Patent US1378102A successfully refreshed from Google Patents.
← Back to Patent Explorer
FR919352A Expired / Lapsed FR ⏱️ 0.0 years remaining

Surface testing device usable in particular as a bore checker

Assignee: Pierre Perthuis
•
Filing: 1945-09-07
•
Granted: 1947-03-06
•
Expires: 1965-09-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Pierre Perthuis

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-07 03:53
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/08

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