US2547607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-walled thermally insulated vessel
Assignee: HOFMAN LAB Inc
•
Filing: 1947-12-30
•
Granted: 1951-04-03
•
Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Gerard F Sulfrian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:56
CPC Classifications
A; A47; A47J; A47J41/00; A47J41/02; A47J41/022; A47J41/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315624A
Cited
USRE21618E
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US762178A
Cited
US1475439A
Cited
US1411781A
Cited
US2239128A
Cited
US2160184A
Cited
US2178778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |