US2454042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Standing-wave measuring apparatus
Assignee: Hazeltine Research Inc
•
Filing: 1945-01-18
•
Granted: 1948-11-16
•
Expires: 1965-01-18
Abstract
No abstract record available.
Inventors
- 👤 Dettinger David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:15
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/04; G01R27/06; Y; Y10; Y10S; Y10S116/00; Y10S116/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US824532A
Cited
US1842662A
Cited
US2101296A
Cited
US2106713A
Cited
US2132094A
Cited
US2191271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |