US3087514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slab liner
Assignee: Individual
•
Filing: 1960-10-26
•
Granted: 1963-04-30
•
Expires: 1980-10-26
Abstract
No abstract record available.
Inventors
- 👤 Highsmith Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:03
CPC Classifications
F; F16; F16L; F16L5/00; F16L5/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879; Y10T29/49908; Y10T29/49925; Y10T29/49927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A LINER FOR A PIPE WHICH EXTENDS THROUGH A CONCRETE SLAB COMPRISING COPPER TUBING HAVING TWO END SECTIONS AND A MIDDLE SECTION, SAID TUBING HAVING A FIRST DIAMETER THROUGHOUT SAID MIDDLE SECTION, THE DIAMETER OF SAID TUBING BEING GRADUALLY REDUCED THROUGHOUT THE LENGTH OF EACH OF SAID END SECTIONS TO A SECOND, SMALLER DIAMETER AT EACH END OF SAID TUBING, SAID SECOND DIAMETER BEING A SLIP FIT FOR SAID PIPE, THE RATIO OF SIAD FIRST DIAMETER TO SAID SECOND DIAMETER BEING SUCH THAT EACH OF SAID END
Claim 2
Dependent Claim
87 words
A LINER FOR A PIPE WHICH EXTENDS THROUGH A CONCRETE SLAB COMPRISING COPPER TUBING HAVING TWO END SECTIONS AND A MIDDLE SECTION, SAID TUBING HAVING A FIRST DIAMETER THROUGHOUT SAID MIDDLE SECTION, THE DIAMETER OF SAID TUBING BEING GRADUALLY REDUCED THROUGHOUT THE LENGTH OF EACH OF SAID END SECTIONS TO A SECOND, SMALLER DIAMETER AT EACH END OF SAID TUBING, SAID SECOND DIAMETER BEING A SLIP FIT FOR SAID PIPE, THE RATIO OF SIAD FIRST DIAMETER TO SAID SECOND DIAMETER BEING SUCH THAT EACH OF SAID END
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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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |