Patent US1450859A successfully refreshed from Google Patents.
Patent US3035164A successfully refreshed from Google Patents.
US3035164A
Expired / Lapsed
US
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Housing for discharge tube
Assignee: Engelhard Hanovia Inc
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Filing: 1957-06-21
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Granted: 1962-05-15
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Expires: 1977-06-21
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Thomas
- 👤 Michael G Tesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:59
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/0075; F21V19/008; F21V15/00; F21V15/04; F21V19/0005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1044757A
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US1938001A
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US2003342A
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US2118437A
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US2130768A
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US2375807A
Cited
US2654870A
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FR1016242A
Cited
FR1092510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |