US3103631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Receiving system in a superheterodyne radio receiver
Assignee: Individual
•
Filing: 1961-03-06
•
Granted: 1963-09-10
•
Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Ito Suekichi
- 👤 Takamura Tomio
- 👤 Sudo Kazuhiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:37
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/34; H03D; H03D7/00; H03D7/06; H03D7/10
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) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |