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US2641853A
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US
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Color analyzing and synthesizing device
Assignee: Individual
•
Filing: 1949-07-16
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Granted: 1953-06-16
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Expires: 1969-07-16
Abstract
No abstract record available.
Inventors
- 👤 Herbert W Helding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:52
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/52; G01J3/526; G01J3/528; B; B41; B41F; B41F33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US329078A
Cited
US1049997A
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US1308512A
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US1414857A
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US2120499A
Cited
US2196271A
Cited
US2476580A
Cited
US2522723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |