US2591131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable electric service lamp
Assignee: Individual
•
Filing: 1949-05-02
•
Granted: 1952-04-01
•
Expires: 1969-05-02
Abstract
No abstract record available.
Inventors
- 👤 Emile P Brus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:56
CPC Classifications
F; F21; F21L; F21L14/00; B; B60; B60Q; B60Q3/00; B60Q3/20; B60Q3/225; B60Q3/80; B60Q3/88; F21V; F21V27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1334995A
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US1956273A
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US2233377A
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US2236435A
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US2458721A
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US2447403A
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US2482543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |