US2527477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of the velocity of phase propagation of electric waves in wave guides
Assignee: Individual
•
Filing: 1944-02-01
•
Granted: 1950-10-24
•
Expires: 1964-02-01
Abstract
No abstract record available.
Inventors
- 👤 Roger E Clapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:27
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/12; H01Q; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2234293A
Cited
US2396044A
Cited
US2415807A
Cited
US2433368A
Cited
US2432093A
Cited
US2464276A
Cited
US2427100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |