US3518681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back-country radio booster
Assignee: Individual
•
Filing: 1965-04-06
•
Granted: 1970-06-30
•
Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Paul Edwin Kiepe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:07
CPC Classifications
H; H03; H03H; H03H2/00; H03H2/005; H03H2/008; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/18
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) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |