US2765182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated sealing apparatus for concentric conduits
Assignee: Individual
•
Filing: 1952-06-14
•
Granted: 1956-10-02
•
Expires: 1972-06-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Truman D Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:34
CPC Classifications
F; F16; F16L; F16L5/00; F16L5/02; F16L7/00; F16L7/02; Y; Y10; Y10S; Y10S277/00; Y10S277/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190503834A
Cited
US901339A
Cited
US937766A
Cited
US993507A
Cited
US1923124A
Cited
US1971438A
Cited
US2349809A
Cited
US2653834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |