US2276986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latex
Assignee: AT&T Inc
•
Filing: 1939-09-09
•
Granted: 1942-03-17
•
Expires: 1959-09-09
Abstract
No abstract record available.
Inventors
- 👤 Archie R Kemp
- 👤 William G Straitiff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:00
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/02; C08C1/06; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/937
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) | 1945-03-16 | 1945-09-15 | 1946-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-16 | 1949-09-15 | 1950-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-16 | 1953-09-15 | 1954-03-17 | $7700.00 | Window Closed / Lapsed |