US2794658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated pipe union with dip tube hanger
Assignee: Individual
•
Filing: 1951-05-19
•
Granted: 1957-06-04
•
Expires: 1971-05-19
Abstract
No abstract record available.
Inventors
- 👤 Roy C Purkhiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:07
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/02; F16L25/023; F16L47/00; F16L47/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US75151A
Cited
US506034A
Cited
US2141404A
Cited
US2204316A
Cited
US2257385A
Cited
US2278479A
Cited
US2653834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |