US2362428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric materials and electrical apparatus containing them
Assignee: AT&T Inc
•
Filing: 1938-12-06
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Granted: 1944-11-07
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Expires: 1958-12-06
Abstract
No abstract record available.
Inventors
- 👤 Burnard S Biggs
- 👤 Stanley O Morgan
- 👤 Addlson H White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:38
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; C; C07; C07C; C07C205/00; C07C205/06; C07C205/07; C07C205/11; C07C205/12
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) | 1947-11-07 | 1948-05-08 | 1948-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-11-07 | 1952-05-08 | 1952-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-11-07 | 1956-05-08 | 1956-11-07 | $7700.00 | Window Closed / Lapsed |