Patent US3389211A successfully refreshed from Google Patents.
US3389211A
Expired / Lapsed
US
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Electronic keyer
Assignee: Jasper Electronics Manufacturing Corp
•
Filing: 1965-01-05
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Granted: 1968-06-18
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Expires: 1985-01-05
Abstract
No abstract record available.
Inventors
- 👤 Mathew A Slaats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2486208A
Cited
US2618753A
Cited
US2657318A
Cited
US2811169A
Cited
US3150228A
Cited
US3176060A
Cited
US3139587A
Cited
US3207952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |