Patent FR1421618A successfully refreshed from Google Patents.
FR1421618A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements in semiconductor devices and their establishment methods
Assignee: Signetics Corp
•
Filing: 1964-11-05
•
Granted: 1965-12-17
•
Expires: 1984-11-05
Abstract
No abstract record available.
Inventors
- 👤 David Frank Allison
- 👤 David Allen Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-09 06:12
CPC Classifications
H; H10; H10D; H10D88/00; H10D84/00; H10D84/01; H10D84/02; H10D84/03; H10D84/038; H10D84/60; H10D84/611; H10D84/613; H10D88/01; H10D99/00; H10P; H10P52/00; H10P95/00; H10W; H10W10/00; H10W10/01; H10W10/011; H10W10/019; H10W10/10; H10W15/00; H10W15/01; H10W20/00; H10W20/20; H10W20/40
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.