Patent US5564002A successfully refreshed from Google Patents.
Patent US2356953A successfully refreshed from Google Patents.
Patent FR990602A successfully refreshed from Google Patents.
FR990602A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Deafness device
Assignee: Vital-Olivier Gassmann
•
Filing: 1949-07-13
•
Granted: 1951-09-24
•
Expires: 1969-07-13
Abstract
No abstract record available.
Inventors
- 👤 Vital-Olivier Gassmann
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 15:26
CPC Classifications
G; G02; G02C; G02C11/00; G02C11/06
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.