FR765477A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements in the production of artificial filaments and films
Assignee: Cyril Wilfred Bonniksen
•
Filing: 1933-12-14
•
Granted: 1934-06-11
•
Expires: 1953-12-14
Abstract
No abstract record available.
Inventors
- 👤 Cyril Wilfred Bonniksen
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 01:06
CPC Classifications
D; D01; D01F; D01F9/00; D01F9/04
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.