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Patent US3016421A successfully refreshed from Google Patents.
US3016421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrographic transmitter
Assignee: AT&T Inc
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Filing: 1960-11-30
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Granted: 1962-01-09
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Expires: 1980-11-30
Abstract
No abstract record available.
Inventors
- 👤 Leon D Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/042; G06F3/0428; G01; G01V; G01V8/00; G01V8/10; G01V8/20; G06F3/0421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |