Patent US2006437A successfully refreshed from Google Patents.
US2006437A
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US
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Apparatus for diffusing pyrethrum
Assignee: O&W Thum Co
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Filing: 1932-09-28
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Granted: 1935-07-02
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Expires: 1952-09-28
Abstract
No abstract record available.
Inventors
- 👤 Walter S Burgess
- 👤 Golley Earl Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:29
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/16; B05B7/1606; B05B7/1613; B05B7/1646; B05B11/00; B05B11/0005; B05B11/0078; B05B11/01; B05B11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-07-01 | 1938-12-31 | 1939-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-01 | 1942-12-31 | 1943-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-01 | 1946-12-31 | 1947-07-02 | $7700.00 | Window Closed / Lapsed |