US2735912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ulanet
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:20
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/12; H01H37/28; H01H37/64; H01H37/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1643575A
Cited
GB276641A
Cited
US1851657A
Cited
US1940300A
Cited
US1972975A
Cited
US1983077A
Cited
US2090407A
Cited
US2698367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |