US2688064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: —
•
Filing: —
•
Granted: 1954-08-31
•
Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:02
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/36; H01H37/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2555433A
Cited
US1143969A
Cited
US1779355A
Cited
US1936324A
Cited
US2045664A
Cited
US2200599A
Cited
US2258042A
Cited
US2297917A
Cited
US2514881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |