US2925557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peak indicating voltmeter
Assignee: Individual
•
Filing: 1955-10-20
•
Granted: 1960-02-16
•
Expires: 1975-10-20
Abstract
No abstract record available.
Inventors
- 👤 Henry B O Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:17
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1611716A
Cited
US2143219A
Cited
DE731824C
Cited
US2499953A
Cited
US2656498A
Cited
US2541824A
Cited
GB697879A
Cited
DE887073C
Cited
US2721978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |