US2454594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for spraying
Assignee: Individual
•
Filing: 1943-09-17
•
Granted: 1948-11-23
•
Expires: 1963-09-17
Abstract
No abstract record available.
Inventors
- 👤 Niels C Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:33
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/06; B; B01; B01F; B01F23/00; B01F23/20; B01F23/21; B01F23/213; B01F23/2131
Claims Analysis
Total Claims: 0
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US1948278A
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US2063887A
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US2182533A
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US2175779A
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US2353368A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |