US3490849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Registering and integrating sphere colorimeter
Assignee: Joyce Loebl and Co Ltd
•
Filing: 1966-02-24
•
Granted: 1970-01-20
•
Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 James Hambleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:44
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4738; G01N21/474; G01J; G01J3/00; G01J3/02; G01J3/0205; G01J3/0251; G01J3/46; G01J3/50; G01J3/51
Claims Analysis
Total Claims: 0
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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) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |