FR685301A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Stepped inner surface pipe
Assignee: Ugo Antoni
•
Filing: 1929-11-21
•
Granted: 1930-07-09
•
Expires: 1949-11-21
Abstract
No abstract record available.
Inventors
- 👤 Ugo Antoni
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 18:54
CPC Classifications
F; F15; F15D; F15D1/00; F15D1/02; F15D1/06; F15D1/065
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.