US2622127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating apparatus
Assignee: AT&T Inc
•
Filing: 1948-12-14
•
Granted: 1952-12-16
•
Expires: 1968-12-14
Abstract
No abstract record available.
Inventors
- 👤 Dietrich A Alsberg
- 👤 Robert P Muhlsteff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:47
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2148976A
Cited
US2112111A
Cited
US2285038A
Cited
US2373168A
Cited
US2452587A
Cited
US2448473A
Cited
US2514745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |