US2458628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vest-pocket circuit testing device
Assignee: Individual
•
Filing: 1944-06-14
•
Granted: 1949-01-11
•
Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel N Okun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:23
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1696333A
Cited
GB152852A
Cited
US1385222A
Cited
GB180835A
Cited
GB205218A
Cited
US1679786A
Cited
GB369849A
Cited
US1989645A
Cited
US2023916A
Cited
US2324661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |