US3479957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive displacement gear type pump
Assignee: Individual
•
Filing: 1968-05-02
•
Granted: 1969-11-25
•
Expires: 1988-05-02
Abstract
No abstract record available.
Inventors
- 👤 Harold O Cadman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/06; F04C15/062; F04C2/00; F04C2/08; F04C2/12; F04C2/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19647; Y10T74/19651
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |