US2617013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-reflecting simmering shutter for high-pressure metal vapor lamps
Assignee: The General Electric Company PLC
•
Filing: 1947-12-31
•
Granted: 1952-11-04
•
Expires: 1967-12-31
Abstract
No abstract record available.
Inventors
- 👤 Smyth John Bernard Score
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:30
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191225028A
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US1110877A
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US1625932A
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US1813383A
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GB334803A
Cited
GB579034A
Cited
GB579920A
Cited
US2405286A
Cited
US2412292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |