Patent US3295709A successfully refreshed from Google Patents.
US3295709A
Expired / Lapsed
US
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Manufactured product having vacuum retaining plastic walls
Assignee: Coleman Co Inc
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Filing: 1965-10-19
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Granted: 1967-01-03
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Wallace D Herrick
- 👤 Howard W Christie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:40
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/32; C23C18/34; C23C18/36; A; A47; A47J; A47J41/00; A47J41/02; A47J41/022; C23C18/18; C23C18/20; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/208; C23C18/28; C23C18/285; C23C18/30; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
IN A MANUFACTURED PRODUCT HAVING AN ENCLOSED SPACE WITH A VACUUM THEREIN HIGHER THAN 10-3 MM. HG, A BOUNDARY WALL FOR SAID SPACE COMPOSED OF A SYNTHETIC PLASTIC WHICH IS INCAPABLE PER SE OF MAINTAINING SAID VACUUM, AND AN ELECTROPLATED LEAD COATING ON THE SURFACE OF SAID WALL FACING SAID SPACE, SAID COATING BEING IN THE FORM OF A CONTINUOUS LAYER HAVING A THICKNESS OF ABOUT .5 TO 2.0 MILS, AND SAID COATING SEALING SAID WALL AND MAKING IT CAPABLE OF RETAINING SAID VACUUM.
References Cited (Backward Citations)
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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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |