US2581497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical testing device
Assignee: Individual
•
Filing: 1948-01-23
•
Granted: 1952-01-08
•
Expires: 1968-01-23
Abstract
No abstract record available.
Inventors
- 👤 Podell Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:22
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE383504C
Cited
US2323931A
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US1936005A
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US1986414A
Cited
US1835882A
Cited
US1984489A
Cited
US2023916A
Cited
US1973870A
Cited
US2167209A
Cited
US2290760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |