US2701875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance type of phase shifter
Assignee: Individual
•
Filing: 1952-06-16
•
Granted: 1955-02-08
•
Expires: 1972-06-16
Abstract
No abstract record available.
Inventors
- 👤 Otto J Baltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1261; Y10T74/1275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1647474A
Cited
US2229449A
Cited
US2172395A
Cited
US2248616A
Cited
FR871729A
Cited
FR880563A
Cited
US2510087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |