US2797705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valved piping arrangement
Assignee: Individual
•
Filing: 1950-10-26
•
Granted: 1957-07-02
•
Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 Virgil L Frantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/18; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7783; Y10T137/8593; Y10T137/87249; Y10T137/87917; Y10T137/88054; Y10T137/88062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US670563A
Cited
US1095087A
Cited
US1524054A
Cited
US1855060A
Cited
US2112427A
Cited
US2206957A
Cited
US2322517A
Cited
US2480712A
Cited
US2426900A
Cited
US2545532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |