US2421967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lighting fixture
Assignee: Safety Car Heating and Lighting Co
•
Filing: 1944-06-02
•
Granted: 1947-06-10
•
Expires: 1964-06-02
Abstract
No abstract record available.
Inventors
- 👤 Schepmoes Lindsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:51
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/04; F21V; F21V17/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB163399A
Cited
US1997687A
Cited
US2221954A
Cited
US2239343A
Cited
US2295788A
Cited
US2385040A
Cited
US2293672A
Cited
US2313131A
Cited
US2283782A
Cited
US2342570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-09 | 1950-12-09 | 1951-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-09 | 1954-12-09 | 1955-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-09 | 1958-12-09 | 1959-06-10 | $7700.00 | Window Closed / Lapsed |