US2369288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency lighting unit
Assignee: EMBURY Manufacturing Co
•
Filing: 1943-04-19
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Granted: 1945-02-13
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Expires: 1963-04-19
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Embury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:22
CPC Classifications
F; F21; F21S; F21S9/00; F21S9/02; F21S9/022; F21L; F21L4/00
Claims Analysis
Total Claims: 0
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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) | 1948-02-13 | 1948-08-14 | 1949-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-13 | 1952-08-14 | 1953-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-13 | 1956-08-14 | 1957-02-13 | $7700.00 | Window Closed / Lapsed |