US2501280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package dehumidifier
Assignee: CM Kemp Manufacturing Co
•
Filing: 1946-06-22
•
Granted: 1950-03-21
•
Expires: 1966-06-22
Abstract
No abstract record available.
Inventors
- 👤 Kemp William Wallace
- 👤 Hanson Hartwig Millard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:15
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F2003/1458
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1667316A
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US1692064A
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US1863656A
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US2124268A
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US1986814A
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US2052931A
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US2075036A
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US2201688A
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US2248225A
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US2160831A
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US2328521A
Cited
US2434297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |