Patent US3555478A successfully refreshed from Google Patents.
US3555478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: GTE Sylvania Inc
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Filing: 1968-04-25
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Granted: 1971-01-12
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Expires: 1988-04-25
Abstract
Abstract A GLASS ENCLOSED CONTROL DEVICE COMPRISING A CONTACT PLATE AND A METALLIC SNAP-ACTION ELEMENT CAPABLE OF OPENING AN ELECTRICAL CIRCUIT UPON THERMAL OR CURRENT OVERLOAD. THE SNAP ELEMENT IS FASTENED TO A PAIR OF LEAD-IN WIRES WHICH LIMIT THE GAP DISTANCE BETWEEN THE SNAP ELEMENT AND THE CONTACT PLATE, WHEN THE ELEMENT SNAPS OPEN.
Inventors
- 👤 Philip J Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:31
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/64; H01H37/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |