US2732418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:46
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN COMBINATION WITH A RADIO TUBE SOCKET, A SHIELD RETAINER, A CYLINDRICAL OPEN ENDED ALUMINUM SHIELD SURROUNDING THE SOCKET AND SECURED BY THE RETAINER AND HAVING HEAT DISSIPATING FINS ON ITS INNER FACE, THE INNER SURFACE OF THE SHIELD INCLUDING THE FINS BEING TREATED TO FORM A COATING OF ALUMINUM OXIDE THEREON AND BEING DYED WITH A DULL BLACK ANILINE DYE, AND BLOWER MEANS COMMUNICATING WITH THE SPACE WITHIN THE SHIELD.
Claim 2
Dependent Claim
71 words
IN COMBINATION WITH A RADIO TUBE SOCKET, A SHIELD RETAINER, A CYLINDRICAL OPEN ENDED ALUMINUM SHIELD SURROUNDING THE SOCKET AND SECURED BY THE RETAINER AND HAVING HEAT DISSIPATING FINS ON ITS INNER FACE, THE INNER SURFACE OF THE SHIELD INCLUDING THE FINS BEING TREATED TO FORM A COATING OF ALUMINUM OXIDE THEREON AND BEING DYED WITH A DULL BLACK ANILINE DYE, AND BLOWER MEANS COMMUNICATING WITH THE SPACE WITHIN THE SHIELD.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |