US2083831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting means
Assignee: American Optical Corp
•
Filing: 1934-03-02
•
Granted: 1937-06-15
•
Expires: 1954-03-02
Abstract
No abstract record available.
Inventors
- 👤 Charles O Cozzens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:58
CPC Classifications
G; G02; G02C; G02C1/00; G02C1/06; G02C1/08; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/954
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) | 1940-06-14 | 1940-12-14 | 1941-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-06-14 | 1944-12-14 | 1945-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-06-14 | 1948-12-14 | 1949-06-15 | $7700.00 | Window Closed / Lapsed |