US2533923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting mechanism
Assignee: AT&T Inc
•
Filing: 1946-12-21
•
Granted: 1950-12-12
•
Expires: 1966-12-21
Abstract
No abstract record available.
Inventors
- 👤 Karl C Edwards
- 👤 David D Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:28
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/04; B29C35/06; B29C35/065; B29C48/00; B29C48/03; B29C48/06; B29C48/25; B29C48/88; B29C48/91; B29C48/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US396908A
Cited
US1689206A
Cited
US1788527A
Cited
US2218138A
Cited
US2278152A
Cited
US2291344A
Cited
US2337038A
Cited
US2454557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |