US2735031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
woodbridge
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:08
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/48; H01J29/487
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2083203A
Cited
US2205071A
Cited
US2227484A
Cited
US2170944A
Cited
FR866065A
Cited
US2348133A
Cited
US2457175A
Cited
US2660612A
Cited
US2612614A
Cited
US2669675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |