US3431361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fm multiplex adapter
Assignee: Adams Russell Co Inc
•
Filing: 1965-04-28
•
Granted: 1969-03-04
•
Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Allen F Podell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:45
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03D1/00; H03D1/22; H03D1/2209; H03D1/2218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB173653A
Cited
US3225143A
Cited
US3242264A
Cited
US3167615A
Cited
US3175040A
Cited
US3146311A
Cited
US3336584A
Cited
US3382493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |