US2914742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve block for lightning arresters
Assignee: Ohio Brass Co
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Filing: 1957-06-06
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Granted: 1959-11-24
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Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Donald L Heath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:59
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/18; H01B1/04; H01B3/00; H01B3/18; H01B3/30; H01B3/34; H01C; H01C7/00; H01C7/10; H01C7/105; H01T; H01T1/00; H01T1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A VALVE BLOCK FOR LIGHTNING ARRESTERS AND THE LIKE, COMPRISING A BODY OF HIGH RESISTANCE SEMI-CONDUCTING MATERIAL INCLUDING SILICON-CARBIDE GRANULES IN A CERAMIC BINDER, THE SAID BODY HAVING A NON-LINEAR VOLTAGE-CURRENT CHARACTERISTIC, METALLIC ELECTRODES AT THE ENDS OF THE BODY ADHERED TO THE SILICON CARBIDE GRANULES THEREOF, AND A COLLAR OF WAX FILLING THE INTERSTICES OF THE BODY FROM THE OUTER SURFACE THEREOF INWARD FOR A DISTANCE OF NOT MORE
Claim 2
Dependent Claim
70 words
A VALVE BLOCK FOR LIGHTNING ARRESTERS AND THE LIKE, COMPRISING A BODY OF HIGH RESISTANCE SEMI-CONDUCTING MATERIAL INCLUDING SILICON-CARBIDE GRANULES IN A CERAMIC BINDER, THE SAID BODY HAVING A NON-LINEAR VOLTAGE-CURRENT CHARACTERISTIC, METALLIC ELECTRODES AT THE ENDS OF THE BODY ADHERED TO THE SILICON CARBIDE GRANULES THEREOF, AND A COLLAR OF WAX FILLING THE INTERSTICES OF THE BODY FROM THE OUTER SURFACE THEREOF INWARD FOR A DISTANCE OF NOT MORE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |