Patent US3380650A successfully refreshed from Google Patents.
US3380650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor control
Assignee: Phillips Petroleum Co
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Filing: 1967-01-12
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Granted: 1968-04-30
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Expires: 1987-01-12
Abstract
No abstract record available.
Inventors
- 👤 John A Drummond
- 👤 Gerhard A Gohlke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:34
CPC Classifications
F; F04; F04C; F04C28/00; F04C28/18; F04D; F04D27/00; F04D27/02; F04D27/0284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1216119A
Cited
US1280811A
Cited
US1783036A
Cited
US2490188A
Cited
US2754763A
Cited
US3330473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |