US3373301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for radio-frequency interference suppression
Assignee: Black and Decker Corp
•
Filing: 1965-10-22
•
Granted: 1968-03-12
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Elliott M Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:43
CPC Classifications
H; H04; H04B; H04B15/00; H04B15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2114102A
Cited
US2334722A
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US2450809A
Cited
US2843770A
Cited
US3119942A
Cited
US3121813A
Cited
US3206627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |