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US3392274A
Expired / Lapsed
US
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Apparatus for converting reflectortype floodlighting systems to use with sealed beamfloodlamps
Assignee: NORMAN M HARFORD
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Filing: 1966-12-12
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Granted: 1968-07-09
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Neely
- 👤 Norman M Harford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:37
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/006; F21V19/007; F21W; F21W2131/00; F21W2131/10; F21W2131/105
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |