US3479007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-lubricated injection valve assembly
Assignee: Dresser Industries Inc
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Filing: 1966-08-18
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Granted: 1969-11-18
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Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Robert O Buell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:31
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/0218; F02M21/0248; F02M21/0257; F02M21/026; F02M21/0269; F01; F01L; F01L1/00; F01L1/12; F01M; F01M9/00; F01M9/10; F02B; F02B43/00; F02M21/0251; F02M21/0275; F02M21/0296; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2275/00; F02B2275/34; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |