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Patent US3505463A successfully refreshed from Google Patents.
US3505463A
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Radio frequency energy barrier material
Assignee: United States Department of the Army
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Filing: 1968-04-08
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Granted: 1970-04-07
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Expires: 1988-04-08
Abstract
No abstract record available.
Inventors
- 👤 James H Mcadams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:59
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015; H05K9/0016; Y; Y10; Y10S; Y10S277/00; Y10S277/919; Y10S277/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126440A
Cited
US1733880A
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US2084523A
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US2469474A
Cited
DE871176C
Cited
US3259406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |