US2994804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting control system
Assignee: SKIRPAN LIGHTING SYSTEMS Inc
•
Filing: —
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Granted: 1961-08-01
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Expires: 1978-08-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:22
CPC Classifications
A; A63; A63J; A63J17/00; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1065513A
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US1799789A
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US1912613A
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US2573405A
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US2659038A
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US2658168A
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US2715703A
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US2735617A
Cited
US2686282A
Cited
US2694154A
Cited
US2712611A
Cited
US2741732A
Cited
US2779540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |