Patent FR1506249A successfully refreshed from Google Patents.
FR1506249A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Butterfly valve refinements
Assignee: David F Wiseman and Sons Ltd
•
Filing: 1966-12-29
•
Granted: 1967-12-15
•
Expires: 1986-12-29
Abstract
No abstract record available.
Inventors
- 👤 Harold Victor Willis
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 13:25
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/222
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.