Patent US3550771A successfully refreshed from Google Patents.
US3550771A
Expired / Lapsed
US
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Fluidic weighing and sorting system
Assignee: United States Department of the Army
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Filing: 1969-03-12
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Granted: 1970-12-29
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Expires: 1989-03-12
Abstract
No abstract record available.
Inventors
- 👤 Chris E Spyropoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:10
CPC Classifications
B; B07; B07B; B07B13/00; B07B13/08; B07C; B07C5/00; B07C5/16; B07C5/165; F; F15; F15C; F15C1/00; F15C1/005; G; G01; G01G; G01G19/00; G01G19/40; G01G19/41; Y; Y10; Y10S; Y10S209/00; Y10S209/906
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) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |