US2613248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery testing apparatus and method
Assignee: MCCOLPIN CHRISTIE CORP
•
Filing: 1948-03-22
•
Granted: 1952-10-07
•
Expires: 1968-03-22
Abstract
No abstract record available.
Inventors
- 👤 Soren L Christie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:41
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/36; G01R31/396; G01R31/385
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |