US2223409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1939-03-17
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Granted: 1940-12-03
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Expires: 1959-03-17
Abstract
No abstract record available.
Inventors
- 👤 Louis J Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:49
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0081; G02B6/0086; G02B6/0091; G02B6/0033; G02B6/0035; G02B6/0036; G02B6/004; G02B6/0043; G02B6/005; G02B6/0058; G02B6/006; G09; G09F; G09F13/00; G09F13/18; G09F2013/184; G09F2013/185; G09F2013/1872; G09F2013/1877; Y; Y10; Y10S; Y10S106/00; Y10S106/07
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) | 1943-12-03 | 1944-06-03 | 1944-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-03 | 1948-06-03 | 1948-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-03 | 1952-06-03 | 1952-12-03 | $7700.00 | Window Closed / Lapsed |