US2815406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide-band distribution amplifier system
Assignee: Individual
•
Filing: 1952-02-20
•
Granted: 1957-12-03
•
Expires: 1972-02-20
Abstract
No abstract record available.
Inventors
- 👤 Ben H Tongue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/36; H03H11/362; H03F; H03F1/00; H03F1/42; H03F1/48; H03F1/50; H03H7/00; H03H7/48; H03H7/482
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735988A
Cited
US1676244A
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US2000190A
Cited
US1971235A
Cited
US2049147A
Cited
US2159546A
Cited
US2145548A
Cited
US2261803A
Cited
US2611807A
Cited
US2710314A
Cited
US2710315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |