Patent US2818360A successfully refreshed from Google Patents.
Patent US3519360A successfully refreshed from Google Patents.
US3519360A
Expired / Lapsed
US
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Apparatus for visual color comparison
Assignee: RICHARD F KUDLEK
•
Filing: 1965-10-22
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Granted: 1970-07-07
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Richard F Kudlek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:37
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/50; G01J3/504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US120224A
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US1423882A
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GB447171A
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US2234278A
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US2321722A
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US2325350A
Cited
US2388727A
Cited
US2502014A
Cited
US2641959A
Cited
US3090993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |