US2858418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire attachment
Assignee: JOHN C VIRDEN CO
•
Filing: 1957-04-01
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Granted: 1958-10-28
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Carl M Moser
- 👤 Edward H Golko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:58
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |