US3474040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphor reclamation
Assignee: GTE Sylvania Inc
•
Filing: 1965-06-18
•
Granted: 1969-10-21
•
Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hedler
- 👤 John Frederick Larson
- 👤 Albert Regenbrecht Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:23
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/01; Y; Y02; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3348924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |