US2698071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light control fixture
Assignee: Cepco Inc
•
Filing: 1949-11-14
•
Granted: 1954-12-28
•
Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Sherman H Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:31
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/003; E04B9/04; E04B9/32; E04B9/34; E04B9/345; F; F21; F21V; F21V11/00; F21V11/16; F21V11/18; F21S; F21S2/00; F21V14/00; F21V14/08; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US412713A
Cited
US880238A
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US1930254A
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US1934696A
Cited
US2111448A
Cited
US2464442A
Cited
US2564046A
Cited
US2568893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |