US2806131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Runway emergency lights
Assignee: Individual
•
Filing: 1955-02-10
•
Granted: 1957-09-10
•
Expires: 1975-02-10
Abstract
No abstract record available.
Inventors
- 👤 Samuel L Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:30
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/18; B64F1/20; E; E01; E01F; E01F9/00; E01F9/60; E01F9/604; E01F9/615; E01F9/623; E01F9/654; E01F9/688; F; F21; F21V; F21V21/00; F21V21/06; F21W; F21W2111/00; F21W2111/06; Y; Y10; Y10S; Y10S248/00; Y10S248/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1425945A
Cited
US1778545A
Cited
US1767087A
Cited
US2219974A
Cited
US2450927A
Cited
US2536533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |