US2542294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Icecap and method of making same
Assignee: Individual
•
Filing: 1947-12-02
•
Granted: 1951-02-20
•
Expires: 1967-12-02
Abstract
No abstract record available.
Inventors
- 👤 Lillius E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:29
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/10; A61F7/103; A61F2007/0098; Y; Y10; Y10S; Y10S383/00; Y10S383/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1002021A
Cited
US1506516A
Cited
US1584370A
Cited
US2120013A
Cited
US2122001A
Cited
US2173288A
Cited
US2320467A
Cited
US2343512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |