US2929024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum tube voltmeter
Assignee: Ohmega Laboratories
•
Filing: 1956-07-18
•
Granted: 1960-03-15
•
Expires: 1976-07-18
Abstract
No abstract record available.
Inventors
- 👤 Harry R Foster
- 👤 Elmo E Crump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:25
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/08; G01R19/00; G01R19/0023
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |