US2445172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw lock for eyeglasses and the like
Assignee: Individual
•
Filing: 1946-12-03
•
Granted: 1948-07-13
•
Expires: 1966-12-03
Abstract
No abstract record available.
Inventors
- 👤 Frank A V Gravinese
- 👤 Ignatius G Failla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:34
CPC Classifications
G; G02; G02C; G02C1/00; G02C1/02; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |