Patent US3271483A successfully refreshed from Google Patents.
US3271483A
Expired / Lapsed
US
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Method and apparatus for discharging static during manufacture of record disks
Assignee: Decca Ltd
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Filing: 1965-03-15
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Granted: 1966-09-06
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Harry Cheeseman
- 👤 Alan Phillipson
- 👤 Basil Harry Royston Spiller
- 👤 Robin Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:48
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/263; B29C45/1701; B29C45/40; B29L; B29L2017/00; B29L2017/001; B29L2017/003; Y; Y10; Y10S; Y10S425/00; Y10S425/81
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A METHOD OF MAKING A PHONOGRAPH RECORD BY INJECTION MOULDING INCLUDING THE STEPS, WHEN THE MOULD IS OPENED AND THE RECORD DISC HAS BEEN FORCED AWAY FROM THE FACES OF THE MOULDM OF DIRECTING A JET OF IONIZED AIR AT THE DISC SO AS TO TO DISCHARGE ANY STATIC CHARGES ON THE DISC.
Claim 2
Independent Claim
53 words
A METHOD OF MAKING A PHONOGRAPH RECORD BY INJECTION MOULDING INCLUDING THE STEPS, WHEN THE MOULD IS OPENED AND THE RECORD DISC HAS BEEN FORCED AWAY FROM THE FACES OF THE MOULDM OF DIRECTING A JET OF IONIZED AIR AT THE DISC SO AS TO TO DISCHARGE ANY STATIC CHARGES ON THE DISC.
Claim 3
Dependent Claim
47 words
INJECTION MOULDING APPARATUS FOR MOULDING A PHONOGRAPH RECORD COMPRISING A FIXED DIE, A MOVING DIE, MEANS FOR CLOSING THE DIES TOGETHER TO FORM A MOULD, AND MEANS FOR AUTOMATICALLY DIRECTING A JET OF IONIZED AIR AT THE FACE OF THE RECORD DISC THE MOULD HAS BEEN OPENED.
Claim 4
Dependent Claim
47 words
INJECTION MOULDING APPARATUS FOR MOULDING A PHONOGRAPH RECORD COMPRISING A FIXED DIE, A MOVING DIE, MEANS FOR CLOSING THE DIES TOGETHER TO FORM A MOULD, AND MEANS FOR AUTOMATICALLY DIRECTING A JET OF IONIZED AIR AT THE FACE OF THE RECORD DISC THE MOULD HAS BEEN OPENED.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |