US3412245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus of retrieval of coded information from symbols having coded inks having photoluminescent components with short and long time constants of decay after short wave illumination
Assignee: Wyeth Holdings LLC
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Filing: 1966-02-09
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Granted: 1968-11-19
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Expires: 1986-02-09
Abstract
No abstract record available.
Inventors
- 👤 Halverson Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; C; C09; C09D; C09D5/00; C09D5/22; G06; G06K; G06K7/00; G06K7/10; G06K7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3334235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |