US3383979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colorimeter probe
Assignee: MARK ASSOCIATES Inc
•
Filing: 1964-03-24
•
Granted: 1968-05-21
•
Expires: 1984-03-24
Abstract
No abstract record available.
Inventors
- 👤 Donald F Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:47
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4738; G01N21/474
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2269813A
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US2406166A
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US2420716A
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US2710924A
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US2843112A
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US2936886A
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US3306157A
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US3130317A
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US3327583A
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US3305689A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |