US2534295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust tip protector for vacuum insulated vessels
Assignee: AMERICAN THERMOS BOTTLE CO
•
Filing: 1949-01-05
•
Granted: 1950-12-19
•
Expires: 1969-01-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Payson
- 👤 Louis J Darmstadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:19
CPC Classifications
A; A47; A47J; A47J41/00; A47J41/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US601698A
Cited
US662812A
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US1001850A
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US1060369A
Cited
US1509949A
Cited
US1577023A
Cited
US1630466A
Cited
GB301615A
Cited
GB366778A
Cited
US2171015A
Cited
GB455426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |