US3352487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1967-11-14
•
Expires: 1984-11-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:35
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/14; G09; G09B; G09B17/00; G09B17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1425244A
Cited
US1527663A
Cited
US2415581A
Cited
US2553338A
Cited
US1977555A
Cited
US2447903A
Cited
US2656618A
Cited
US3055117A
Cited
US3083906A
Cited
US3248050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |