US2734141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
hughes
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:51
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979392A
Cited
US2178458A
Cited
US2131192A
Cited
US2171766A
Cited
US2174853A
Cited
US2289906A
Cited
US2303166A
Cited
US2400331A
Cited
US2467506A
Cited
US2567874A
Cited
US2569654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |