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US3433245A
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Discharge valve pulsator system
Assignee: Petro Canada Exploration Inc
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Filing: 1967-04-28
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Granted: 1969-03-18
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Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 Lubomyr M O Cymbalisty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:07
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/56; F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; G; G05; G05D; G05D9/00; G05D9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/7287; Y10T137/7313; Y10T137/7316; Y10T137/7319
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2470744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |