Patent US2324474A successfully refreshed from Google Patents.
US2816705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computing device
Assignee: Alwac International Inc
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Filing: 1954-01-15
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Granted: 1957-12-17
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Expires: 1974-01-15
Abstract
No abstract record available.
Inventors
- 👤 Lewis L Thrall
- 👤 Jr Joseph Allan Beek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:16
CPC Classifications
H; H03; H03M; H03M1/00; G; G06; G06K; G06K11/00; G06K11/02; G06K15/00; G06K15/22; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2617587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |