US2808984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coding device
Assignee: Individual
•
Filing: 1951-03-27
•
Granted: 1957-10-08
•
Expires: 1971-03-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Byron O Marshall
- 👤 John D Dillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:02
CPC Classifications
H; H03; H03M; H03M7/00; H03M7/30; H03M7/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2428811A
Cited
US2473444A
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US2558460A
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US2679975A
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US2597549A
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US2570716A
Cited
US2657856A
Cited
US2686632A
Cited
US2729811A
Cited
US2686299A
Cited
US2590950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |