Patent US2072185A successfully refreshed from Google Patents.
US2571192A
Expired / Lapsed
US
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Defroster
Assignee: Individual
•
Filing: 1948-11-26
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Granted: 1951-10-16
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Expires: 1968-11-26
Abstract
No abstract record available.
Inventors
- 👤 Edward F Brill
- 👤 Orval W Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:09
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0482; A47F3/0495; F; F25; F25D; F25D21/00; F25D21/06; F25D21/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US175291A
Cited
GB143527A
Cited
US1908573A
Cited
US2056970A
Cited
US2077820A
Cited
US2219393A
Cited
US2443203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |