US2536239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel holding apparatus
Assignee: AT&T Inc
•
Filing: 1946-11-27
•
Granted: 1951-01-02
•
Expires: 1966-11-27
Abstract
No abstract record available.
Inventors
- 👤 Richard M Tyndall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:53
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/0053; H05K7/00; H05K7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US78132A
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US494802A
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US1306433A
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US857237A
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US928657A
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US1616727A
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US1612774A
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US1758733A
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US1792612A
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US1812585A
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US2106525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |