US2886712A
Expired / Lapsed
US
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Apparatus for determining the color temperature of a source of light
Assignee: P Gossen and Co GmbH
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Filing: 1954-03-25
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Granted: 1959-05-12
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Expires: 1974-03-25
Abstract
No abstract record available.
Inventors
- 👤 Schultze Werner
- 👤 Gossen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:29
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42
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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |