US3519874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Divided screen display tube for store/non-store information presentation
Assignee: Westinghouse Electric Corp
•
Filing: 1969-03-07
•
Granted: 1970-07-07
•
Expires: 1989-03-07
Abstract
No abstract record available.
Inventors
- 👤 Irvin I Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:38
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2862140A
Cited
US2981863A
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 |