US2976506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive electrical instruments
Assignee: Individual
•
Filing: 1960-04-25
•
Granted: 1961-03-21
•
Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Marian E Bourns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:35
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/36; G; G01; G01F; G01F23/00; G01F23/14; G01F23/18; G01L; G01L9/00; G01L9/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |