Patent US4307695A successfully refreshed from Google Patents.
Patent FR770056A successfully refreshed from Google Patents.
FR770056A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
New way to correct eyesight, in particular that of presbyopes, without wearing glasses, eyeglasses or face-to-hands and device for achieving
Assignee: Jafet
•
Filing: 1934-02-15
•
Granted: 1934-09-06
•
Expires: 1954-02-15
Abstract
No abstract record available.
Inventors
- 👤 Jafet
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 17:39
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/002; G02B25/005
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.