US3069657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective calling system
Assignee: GTE Sylvania Inc
•
Filing: 1958-06-11
•
Granted: 1962-12-18
•
Expires: 1978-06-11
Abstract
No abstract record available.
Inventors
- 👤 Jr James H Green
- 👤 Gordon Jerry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:23
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/022; H04W88/025; H04W88/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2403561A
Cited
US2658196A
Cited
US2643819A
Cited
US2643368A
Cited
US2976516A
Cited
US2874368A
Cited
US2740106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |