US2545673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmic attachment
Assignee: ALEXANDRE SACCARD
•
Filing: 1949-05-20
•
Granted: 1951-03-20
•
Expires: 1969-05-20
Abstract
No abstract record available.
Inventors
- 👤 Pozarik Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:58
CPC Classifications
G; G02; G02C; G02C9/00; G02C9/02; G02C5/00; G02C5/02; G02C5/04; G02C9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US724197A
Cited
US1794927A
Cited
US1899905A
Cited
US1964243A
Cited
US2286219A
Cited
US2443249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |