US3715055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for injecting one or more articles individually into a tubular flow path
Assignee: Halliburton Co
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Filing: 1971-06-16
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Granted: 1973-02-06
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Expires: 1991-06-16
Abstract
Abstract THIS INVENTION RELATES TO AN APPARATUS FOR DISPENSING OBJECTS AND MORE PARTICULARLY TO AN APPARATUS WITH A GROOVED SLEEVE AND A SHAFT HAVING A HELICAL RIB THEREON ROTATABLY MOUNTED IN THE SLEEVE, THE OBJECTS BEING DISPENSED BY THE RIB PUSHING THEM ALONG THE GROOVE AND OUT OF THE APARATUS AS THE SHAFT IS ROTATED. D R A W I N G
Inventors
- 👤 W Kendrick
- 👤 L Ferguson
- 👤 B Frazier
- 👤 N Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:48
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/068; B; B65; B65G; B65G53/00; B65G53/30
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |