US2616948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical measuring apparatus
Assignee: Automatic Telephone and Electric Co Ltd
•
Filing: 1948-11-22
•
Granted: 1952-11-04
•
Expires: 1968-11-22
Abstract
No abstract record available.
Inventors
- 👤 Cannon James Rowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:29
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/28; G01R27/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1634403A
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US1684397A
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GB246963A
Cited
US1848134A
Cited
US2081690A
Cited
GB431731A
Cited
US2249164A
Cited
US2409419A
Cited
GB569279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |