US2433690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating unit
Assignee: ELECTRONIC LAB Inc
•
Filing: 1943-09-24
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Granted: 1947-12-30
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Expires: 1963-09-24
Abstract
No abstract record available.
Inventors
- 👤 William W Garstang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:00
CPC Classifications
F; F21; F21V; F21V7/00; B; B60; B60Q; B60Q3/00; B60Q3/10; B60Q3/12; B60Q3/60; B60Q3/68; F21V11/00; F21V11/08; F21V11/14; F21V14/00; F21V14/08; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB452337A
Cited
DE424177C
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US1930070A
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US2093735A
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US2298336A
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US2295626A
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US2301419A
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US2305583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |