Patent US2927200A successfully refreshed from Google Patents.
US2927200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light controllers for illuminating devices
Assignee: EDWIN F GUTH CO
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Filing: 1959-05-21
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Granted: 1960-03-01
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Expires: 1979-05-21
Abstract
No abstract record available.
Inventors
- 👤 Sr Edwin F Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:19
CPC Classifications
F; F21; F21V; F21V5/00; F21V5/02; F21V11/00; F21V11/06; F21V3/00; F21Y; F21Y2103/00
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |