US3450992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Product-type phase sensitive detector including a balanced impedance bridge having thermocouple load elements connected across opposite bridge arms
Assignee: Research Corp
•
Filing: 1966-04-27
•
Granted: 1969-06-17
•
Expires: 1986-04-27
Abstract
No abstract record available.
Inventors
- 👤 Lawrence R Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/22; G01R27/00; G01R27/02; G01R27/08; G01R27/10; G01R27/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2169116A
Cited
US2316153A
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US2644923A
Cited
US3019983A
Cited
US3017107A
Cited
US2935260A
Cited
US3021074A
Cited
US3358231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |