Patent US3863794A successfully refreshed from Google Patents.
US3863794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum retaining jar
Assignee: BRIGHTON CORP Ltd
•
Filing: 1973-04-11
•
Granted: 1975-02-04
•
Expires: 1993-04-11
Abstract
Abstract A VACUUM RETAINING JAR CONSTRUCTED OF SYNTHETIC PLASTIC MATERIAL HAVING AN INNER SHELL AND AN OUTER SHELL WITH ADJOINING METAL RINGS IMBEDDED IN RESPECTIVE SHELLS AND CONNECTING THE UPPER TERMINAL ENDS OF THE SHELLS IN A PERMANENT AIR-TIGHT RELATIONSHIP. THE OUTER WALL OF THE INNER SHELL AND THE INNER WALL OF THE OUTER SHELL ARE PROVIDED WITH A METALLIC INSULATING COATING. A COVER IS POSITIONED OVER THE JOINT OF THE UPPER ENDS OF THE SHELLS.
Inventors
- 👤 Hideaki Hata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:30
CPC Classifications
A; A47; A47J; A47J41/00; A47J41/02; A47J41/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2024065A
Cited
US2534295A
Cited
US2880691A
Cited
US3048294A
Cited
US3225954A
Cited
US3406857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |