US3606395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus using preformed conduits
Assignee: Individual
•
Filing: 1969-08-04
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Granted: 1971-09-20
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Expires: 1989-08-04
Abstract
Abstract A METHOD AND APPARATUS USED IN LAYING UNDERGROUND CABLES, ELECTRICAL WIRES AND THE LIKE CONSISTS OF PREFORMING CONDUIT SECTIONS HAVING A PLURALITY OF SPACED DUCTS FOR THE ELECTRICAL CABLES, WIRES AND THE LIKE. THE PREFORMED CONDUIT SECTIONS ARE PLACED IN A TRANCE BELOW THE NORMAL LEVEL OF THE GROUND AND THEIR LONGITUDINAL ENDS ARE JOINED TO ONE ANOTHER TO FORM CONTINUOUS DUCTS WITHIN THE CONDUIT SECTIONS. THE PREFORMED CONDUIT SECTIONS ARE SEALED TY A SEALING COMPOUND BETWEEN THE LONGITUDINAL ENDS OF TWO CONDUIT SECTIONS TO BE JOINED.
Inventors
- 👤 Phillip Salerno
- 👤 Michael Sammaritano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:40
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4439; G02B6/4459; F; F16; F16L; F16L39/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |