Patent US2797367A successfully refreshed from Google Patents.
US2797367A
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US
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Lighting system
Assignee: Westinghouse Electric Corp
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Filing: 1955-11-16
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Granted: 1957-06-25
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Expires: 1975-11-16
Abstract
No abstract record available.
Inventors
- 👤 Charles L Scott
- 👤 Thomas N Humphreville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:11
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/18; B64F1/20; H; H05; H05B; H05B39/00; H05B39/09
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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |