Patent US2477000A successfully refreshed from Google Patents.
US2812388A
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US
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Two way repeaters
Assignee: International Standard Electric Corp
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Filing: 1954-08-30
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Granted: 1957-11-05
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Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas David Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:26
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/54; H04B1/58; H03; H03F; H03F3/00; H03F3/62; H04B3/00; H04B3/02; H04B3/04; H04B3/06; H04B3/08; H04B3/36; H04B3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2282465A
Cited
US2662124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |