US2507541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible cord lamp
Assignee: Individual
•
Filing: 1945-12-07
•
Granted: 1950-05-16
•
Expires: 1965-12-07
Abstract
No abstract record available.
Inventors
- 👤 Louis L Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:23
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/36; F21V21/38; B; B65; B65D; B65D85/00; B65D85/02; B65D85/04; F21V27/00; F21V27/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1318377A
Cited
US982651A
Cited
US1431822A
Cited
US1730104A
Cited
US1982854A
Cited
US2097222A
Cited
US2272040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |