US2745778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lining a metal pipe
Assignee: Individual
•
Filing: 1952-06-19
•
Granted: 1956-05-15
•
Expires: 1972-06-19
Abstract
No abstract record available.
Inventors
- 👤 Garten Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
H; H01; H01B; H01B1/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
THE METHOD OF LINING PIPE WHICH COMPRISES COATING THE INNER SURFACE OF THE PIPE WITH AN ADHESIVE MATERIAL, POSITIONING A FLEXIBLE TUBULAR LINING WITHIN THE PIPE, PLACING A STOPPER IN THE FORM OF A MOVABLE AIR TIGHT VALVE MEMBER WITHIN ONE END OF THE LINING AND PIPE, AND APPLYING FLUID UNDER PRESSURE TO SAID ONE END OF THE PIPE FORCING THE STOPPER THROUGH THE LINING AND PIPE AND FORCING THE LINING AGAINST THE ADHESIVE COATED INNER SURFACE OF THE PIPE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |