Patent US2956273A successfully refreshed from Google Patents.
US2956273A
Expired / Lapsed
US
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Combined electric lamp for illumination and signaling
Assignee: Individual
•
Filing: 1955-04-06
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Granted: 1960-10-11
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Expires: 1975-04-06
Abstract
No abstract record available.
Inventors
- 👤 Fruengel Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:22
CPC Classifications
F; F21; F21V; F21V23/00; F21L; F21L2/00; H; H05; H05B; H05B41/00; H05B41/14; H05B41/30; Y; Y10; Y10S; Y10S315/00; Y10S315/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1936005A
Cited
US1839113A
Cited
US1984489A
Cited
US2128800A
Cited
US2420307A
Cited
US2628331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |