US3418489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching circuit
Assignee: Individual
•
Filing: 1967-08-09
•
Granted: 1968-12-24
•
Expires: 1987-08-09
Abstract
No abstract record available.
Inventors
- 👤 Jr George E Platzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:37
CPC Classifications
H; H01; H01R; H01R31/00; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/722; H03K17/723; H03K17/725; H05; H05B; H05B47/00; H05B47/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US941777A
Cited
US2201898A
Cited
US3132287A
Cited
US3280386A
Cited
US3320518A
Cited
US3319152A
Cited
US3328606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |