US2709256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eye protective means
Assignee: American Optical Corp
•
Filing: 1952-01-05
•
Granted: 1955-05-31
•
Expires: 1972-01-05
Abstract
No abstract record available.
Inventors
- 👤 Charles A Baratelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:42
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/026; A63; A63B; A63B33/00; A63B33/002; A63B33/004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |