US2071893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eyeglass construction
Assignee: BAY STATE OPTICAL Co
•
Filing: 1934-05-12
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Granted: 1937-02-23
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Expires: 1954-05-12
Abstract
No abstract record available.
Inventors
- 👤 George E Nerney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:20
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/14; G02C5/146; G02C1/00; G02C1/06; G02C1/08; G02C5/20; G02C5/22; G02C5/2263; G02C2200/00; G02C2200/08
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) | 1940-02-23 | 1940-08-24 | 1941-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-23 | 1944-08-24 | 1945-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-23 | 1948-08-24 | 1949-02-23 | $7700.00 | Window Closed / Lapsed |