US2520489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for exact reading of the phase position of an arbitrary impulse in a periodically recurrent series of impulses
Assignee: Individual
•
Filing: 1946-05-31
•
Granted: 1950-08-29
•
Expires: 1966-05-31
Abstract
No abstract record available.
Inventors
- 👤 Bergmar Sten Erik
- 👤 Kimblad Folke Verner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:13
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2407294A
Cited
US2405238A
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US2387569A
Cited
GB552072A
Cited
US2404810A
Cited
US2422074A
Cited
US2403527A
Cited
US2433667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |