Patent US2836709A successfully refreshed from Google Patents.
US2836709A
Expired / Lapsed
US
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Luminaires
Assignee: McGraw Edison Co
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Filing: 1955-05-03
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Granted: 1958-05-27
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Expires: 1975-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold A Van Dusen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:30
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/107; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/086; F21V25/00; F21V25/02; F21V25/04; F21W; F21W2131/00; F21W2131/10; F21W2131/103
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |