Patent US3038488A successfully refreshed from Google Patents.
Patent US1790664A successfully refreshed from Google Patents.
Patent US4352974A successfully refreshed from Google Patents.
Patent FR11140E successfully refreshed from Google Patents.
FR11140E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Optical instrument
Assignee: Individual
•
Filing: 1909-06-16
•
Granted: 1909-12-09
•
Expires: 1929-06-16
Abstract
No abstract record available.
Inventors
- 👤 Georges Fotescu
- 👤 Gustave Heilbrunn
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 11:10
CPC Classifications
G; G02; G02B; G02B3/00; G02B3/02; G02B3/08
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.