US2641702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of wave length in wave guide and coaxial lines
Assignee: International Standard Electric Corp
•
Filing: 1948-10-22
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Granted: 1953-06-09
•
Expires: 1968-10-22
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel L Cohen
- 👤 Sichak William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:37
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/183; H01P1/182; H01Q; H01Q3/00; H01Q3/44; H01Q3/443
Claims Analysis
Total Claims: 0
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US2557961A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |