US3439105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual display system
Assignee: Singer General Precision Inc
•
Filing: 1965-03-24
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Granted: 1969-04-15
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Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 William C Ebeling
- 👤 Eldred H Paufve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/18; G; G01; G01C; G01C11/00; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/30; G09B9/301; G09B9/302; H04N3/00; H04N3/10; H04N3/30; H04N3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3028684A
Cited
US3113989A
Cited
US3153699A
Cited
US3131247A
Cited
US3067526A
Cited
US3294891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |