US2642499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Route-selecting automatic telephone system
Assignee: International Standard Electric Corp
•
Filing: 1947-10-08
•
Granted: 1953-06-16
•
Expires: 1967-10-08
Abstract
No abstract record available.
Inventors
- 👤 Fernand P Gohorel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:40
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1625425A
Cited
US1757446A
Cited
US1900969A
Cited
US2238223A
Cited
US2249449A
Cited
US2424585A
Cited
US2326478A
Cited
US2354682A
Cited
US2416086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |