US2514745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable scale electrical testing instrument
Assignee: HEYER IND Inc
•
Filing: 1946-12-19
•
Granted: 1950-07-11
•
Expires: 1966-12-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Dalzell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:48
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/36; G01R31/3644; G01R31/3646; G01R31/385; Y; Y10; Y10S; Y10S116/00; Y10S116/41; Y10S116/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |