US3008043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communications receiver
Assignee: National Co Inc
•
Filing: 1959-06-22
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Granted: 1961-11-07
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Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Jewell R Caulk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:27
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/005; H04B1/0067; H04B1/0082; H04B1/0089; H04B1/0092; H03; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/06; H03J7/065; H04B1/06; H04B1/16; H04B1/26
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) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |