US2347665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal reflection lighting means
Assignee: Individual
•
Filing: 1941-03-04
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Granted: 1944-05-02
•
Expires: 1961-03-04
Abstract
No abstract record available.
Inventors
- 👤 Christensen Geneva Bandy
- 👤 Christensen Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:54
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0033; G02B6/0058; G02B6/0061; F; F21; F21S; F21S8/00; G02B6/0065; G02B6/0013; G02B6/0015; G02B6/002; G02B6/0021; G02B6/0035; G02B6/0036; G02B6/0045; G02B6/0046; G02B6/005; G02B6/0055; G09; G09F; G09F13/00; G09F13/18; G09F2013/1804; G09F2013/1809; G09F2013/1813; G09F2013/1827
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) | 1947-05-02 | 1947-11-01 | 1948-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-02 | 1951-11-01 | 1952-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-02 | 1955-11-01 | 1956-05-02 | $7700.00 | Window Closed / Lapsed |