US2323719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current generator
Assignee: AT&T Inc
•
Filing: 1941-05-21
•
Granted: 1943-07-06
•
Expires: 1961-05-21
Abstract
No abstract record available.
Inventors
- 👤 Rudolph F Mallina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:20
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/23; H04M1/26; H04M1/30; H04M1/50
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) | 1946-07-05 | 1947-01-04 | 1947-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-07-05 | 1951-01-04 | 1951-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-07-05 | 1955-01-04 | 1955-07-06 | $7700.00 | Window Closed / Lapsed |