US2442545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector for vacuum tubes
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1945-06-26
•
Granted: 1948-06-01
•
Expires: 1965-06-26
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Koch
- 👤 Herndon W Leighton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:03
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; H01J5/40; H01J5/42; H01J2893/00; H01J2893/0033; H01J2893/0034
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1310054A
Cited
US1870959A
Cited
US1658651A
Cited
US1775530A
Cited
US2056861A
Cited
US2100187A
Cited
US2147418A
Cited
US2197511A
Cited
US2190302A
Cited
US2318435A
Cited
US2332529A
Cited
US2323148A
Cited
US2402927A
Cited
US2335041A
Cited
US2408271A
Cited
US2400364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-01 | 1951-12-01 | 1952-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-01 | 1955-12-01 | 1956-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-01 | 1959-12-01 | 1960-06-01 | $7700.00 | Window Closed / Lapsed |