US2575843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1946-03-14
•
Granted: 1951-11-20
•
Expires: 1966-03-14
Abstract
No abstract record available.
Inventors
- 👤 Harry H Semrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:43
CPC Classifications
A; A47; A47K; A47K5/00; A47K5/02; A47K2201/00; A47K2201/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US358766A
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US1198184A
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US1337852A
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US1301720A
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US2230709A
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US2359797A
Cited
US2489543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |