Patent US3185648A successfully refreshed from Google Patents.
Patent US3456652A successfully refreshed from Google Patents.
US3456652A
Expired / Lapsed
US
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Blowing apparatus for use with threshing machine riddles
Assignee: Individual
•
Filing: 1965-12-20
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Granted: 1969-07-22
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Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Robert A Louks
- 👤 Vernon H Sietmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:46
CPC Classifications
A; A01; A01D; A01D75/00; A01D75/28; A01D75/282; Y; Y10; Y10S; Y10S56/00; Y10S56/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |