US2391936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Raising and lowering apparatus for electric lighting fixtures
Assignee: Individual
•
Filing: 1943-09-06
•
Granted: 1946-01-01
•
Expires: 1963-09-06
Abstract
No abstract record available.
Inventors
- 👤 Wilson Wesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/36; F21V21/38; F21V23/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1948-12-31 | 1949-07-02 | 1950-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-31 | 1953-07-02 | 1954-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-31 | 1957-07-02 | 1958-01-01 | $7700.00 | Window Closed / Lapsed |