US2656535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonreflecting background for testing microwave equipment
Assignee: Individual
•
Filing: 1945-08-06
•
Granted: 1953-10-20
•
Expires: 1965-08-06
Abstract
No abstract record available.
Inventors
- 👤 Leland K Neher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:46
CPC Classifications
H; H01; H01Q; H01Q17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2106768A
Cited
FR802728A
Cited
US2316151A
Cited
US2594971A
Cited
US2461005A
Cited
US2293839A
Cited
US2293181A
Cited
US2436578A
Cited
US2464006A
Cited
US2474384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |