US2610250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic-wave energyabsorbing material
Assignee: Hazeltine Research Inc
•
Filing: 1946-11-05
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Granted: 1952-09-09
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Expires: 1966-11-05
Abstract
No abstract record available.
Inventors
- 👤 Harold A Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:33
CPC Classifications
H; H01; H01Q; H01Q17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1741582A
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US2343040A
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US2423396A
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US2393541A
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US2412805A
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US2464006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |