US1415076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating composition
Assignee: AT&T Inc
•
Filing: 1919-12-26
•
Granted: 1922-05-09
•
Expires: 1939-12-26
Abstract
No abstract record available.
Inventors
- 👤 Robert R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:03
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/084; C; C08; C08K; C08K3/00; C08K3/34; C08K3/36; Y; Y10; Y10S; Y10S528/00; Y10S528/931
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) | 1925-05-08 | 1925-11-07 | 1926-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-05-08 | 1929-11-07 | 1930-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-05-08 | 1933-11-07 | 1934-05-09 | $7700.00 | Window Closed / Lapsed |