US2597662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable self-contained reading lamp
Assignee: Individual
•
Filing: 1949-10-21
•
Granted: 1952-05-20
•
Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 Melamed Louis
- 👤 Morris U Greenberg
- 👤 Irving J Swartzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:54
CPC Classifications
F; F21; F21V; F21V33/00; F21V33/0004; F21V33/0048; F21S; F21S9/00; F21S9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1542512A
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US1689457A
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US1616410A
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US1893071A
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DE519342C
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US2205733A
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US2268189A
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US2377538A
Cited
US2427051A
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US2493491A
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US2561744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |