US2636073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing for electrical circuit units
Assignee: AT&T Inc
•
Filing: 1950-12-19
•
Granted: 1953-04-21
•
Expires: 1970-12-19
Abstract
No abstract record available.
Inventors
- 👤 Walter J Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:43
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/224; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2136609A
Cited
US2194703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |