Patent US2673929A successfully refreshed from Google Patents.
US2673929A
Expired / Lapsed
US
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Integrating circuit
Assignee: Allen B du Mont Laboratories Inc
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Filing: 1951-07-27
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Granted: 1954-03-30
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Expires: 1971-07-27
Abstract
No abstract record available.
Inventors
- 👤 Charles E Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:08
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/44; G; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |