US2777702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable fluid conveying connection with pressure balanced seals
Assignee: National Automatic Tool Co Inc
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Filing: 1951-03-29
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Granted: 1957-01-15
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Expires: 1971-03-29
Abstract
No abstract record available.
Inventors
- 👤 Rodal Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:45
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/0009; B23Q1/0018; B23Q1/0027; B23Q1/0036; B23Q11/00; B23Q11/10; F; F16; F16L; F16L27/00; F16L27/08; F16L27/087; Y; Y10; Y10S; Y10S277/00; Y10S277/907; Y10S277/93; Y10S285/00; Y10S285/91; Y10T; Y10T279/00; Y10T279/17; Y10T279/17111; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455
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) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |