US2577483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-compensating measuring bridge circuit having automatic control and/or alarm
Assignee: Hartford National Bank and Trust Co
•
Filing: 1947-02-01
•
Granted: 1951-12-04
•
Expires: 1967-02-01
Abstract
No abstract record available.
Inventors
- 👤 Roosdorp Hermanus Joannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2256304A
Cited
US2363336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |