US2234353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical insulating material
Assignee: AT&T Inc
•
Filing: 1939-04-12
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Granted: 1941-03-11
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Expires: 1959-04-12
Abstract
No abstract record available.
Inventors
- 👤 Amos L Quinlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:03
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/185; B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/581; B31; B31C; B31C3/00; B29L; B29L2023/00; B29L2023/22; B29L2023/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-03-10 | 1944-09-09 | 1945-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-10 | 1948-09-09 | 1949-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-10 | 1952-09-09 | 1953-03-11 | $7700.00 | Window Closed / Lapsed |