Patent US1364496A successfully refreshed from Google Patents.
Patent US2896502A successfully refreshed from Google Patents.
US2896502A
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Colorimeter apparatus
Assignee: Thornhill-Craver Co Inc
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Filing: 1956-05-07
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Granted: 1959-07-28
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Expires: 1976-05-07
Abstract
No abstract record available.
Inventors
- 👤 Obert L Nordin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:15
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/05; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190425668A
Cited
US1417530A
Cited
US2066934A
Cited
US2301401A
Cited
US2481882A
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US2562181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |