US3494813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lining a pipe using fluid pressure in the form of a vacuum
Assignee: JOE F HOLCOMB
•
Filing: 1965-11-08
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Granted: 1970-02-10
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Expires: 1985-11-08
Abstract
No abstract record available.
Inventors
- 👤 John E Lawrence
- 👤 Joe F Holcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:16
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/24; B29C49/26; B29C63/00; B29C63/26; B29C63/34; B29C63/346; B29C63/36; F; F16; F16L; F16L55/00; F16L55/16; F16L55/162; F16L55/165; F16L55/1651; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |