Patent US5158473A successfully refreshed from Google Patents.
Patent FR1229397A successfully refreshed from Google Patents.
FR1229397A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Dual pen with alternative ball tips
Assignee: Umberto Legnani
•
Filing: 1959-06-30
•
Granted: 1960-09-06
•
Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 Umberto Legnani
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 21:57
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/10; B43K24/16; B43K24/163
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.