Patent FR859489A successfully refreshed from Google Patents.
FR859489A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to gate valves and their seals
Assignee: Joseph Heinen
•
Filing: 1939-08-25
•
Granted: 1940-12-19
•
Expires: 1959-08-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph Heinen
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 14:24
CPC Classifications
H; H04; H04L; H04L13/00; H04L13/18; H04L13/188; F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/205; F16K5/207
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.