← Back to Patent Explorer
US3554890A Expired / Lapsed US ⏱️ 0.0 years remaining

Observation device for an electrolytic corrosion test system

Assignee: Individual
•
Filing: 1968-09-23
•
Granted: 1971-01-12
•
Expires: 1988-09-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract AN OBERVATION DEVICE FOR AN ELECTROLYTIC CORROSION TEST SYSTEM COMPISING A HOLLOW CYLINDRICAL SUBSTANTIALLY VSHAPED CELL HAVING TWO IDENTICAL HOLLOW CYLINDRICAL PORTIONS INTERCONNECTED AT HTE LOWER ENDS BY A HOLLOW CYLINDRICAL BASE PORTION, ONE OF SAID INTERCONNECTED CYLINDRICAL PORTIONS RECEIVING AND HOLDING AN ELECTRODE ELEMENT IN POSITION THEREIN; AND A RESILIENT ANNULAR GASKET SNUGLY FIT AROUND SAID CYLINDRICAL BASE PORTION AND HAVING A SEAT FOR THE BASE PORTION AND A CENTER ANNULAR BOSS EXTENDING DOWNWARDS FROM THE BODY OF SAID GASKET, SAID BOSS BEING ADAPTED TO ABUT AAINST IN ARTICLE TO BE TESTED SO AS TO PROVIDE A FLUID-TIHT SEAL BETWEEN THE BOTTOM END OF THE BOSS AND THE SURFACE OF THE ARTICLE.

Inventors

  • 👤 Susumu Kariya

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 19:23
CPC Classifications
G; G01; G01N; G01N17/00

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

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-01-11 1974-07-13 1975-01-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-11 1978-07-13 1979-01-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-11 1982-07-13 1983-01-12 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag