US1762999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulator system
Assignee: AT&T Inc
•
Filing: 1929-02-28
•
Granted: 1930-06-10
•
Expires: 1949-02-28
Abstract
No abstract record available.
Inventors
- 👤 Emanuel C Manderfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/26; H02P7/265; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913; Y10T; Y10T29/00; Y10T29/49; Y10T29/49972; Y10T29/49975; Y10T29/49979
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) | 1933-06-09 | 1933-12-09 | 1934-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-09 | 1937-12-09 | 1938-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-09 | 1941-12-09 | 1942-06-10 | $7700.00 | Window Closed / Lapsed |