US3102422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particulate material flow measuring
Assignee: Phillips Petroleum Co
•
Filing: 1958-07-07
•
Granted: 1963-09-03
•
Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Kent E Hatfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:30
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0186; G01; G01F; G01F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1451064A
Cited
US1822458A
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US1947923A
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US2153450A
Cited
US2780938A
Cited
US2755057A
Cited
US2915078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |