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US2537248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable spectacles
Assignee: Individual
•
Filing: 1947-03-12
•
Granted: 1951-01-09
•
Expires: 1967-03-12
Abstract
No abstract record available.
Inventors
- 👤 Vigano Gianni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:56
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/006; G02C5/02; G02C5/08; G02C5/14; G02C5/20
Claims Analysis
Total Claims: 0
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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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |