Patent US2522251A successfully refreshed from Google Patents.
US2522251A
Expired / Lapsed
US
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Cold wave permanent cap
Assignee: Individual
•
Filing: 1947-10-22
•
Granted: 1950-09-12
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Expires: 1967-10-22
Abstract
No abstract record available.
Inventors
- 👤 Johanna E Beguhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:50
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US241149A
Cited
US1516796A
Cited
US1600530A
Cited
US1618297A
Cited
US1766749A
Cited
FR781313A
Cited
US2051594A
Cited
FR811941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |