US3530984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable display devices
Assignee: Howard Displays Inc
•
Filing: 1968-12-13
•
Granted: 1970-09-29
•
Expires: 1988-12-13
Abstract
No abstract record available.
Inventors
- 👤 Fred Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:57
CPC Classifications
G; G09; G09F; G09F5/00; G09F5/02; B; B21; B21D; B21D1/00; B21D1/06; B21D1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2707839A
Cited
GB1017199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |