US2722237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic pipe with attached tensile load-bearing member
Assignee: YARDLEY PLASTICS Co
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Filing: 1953-03-31
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Granted: 1955-11-01
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Expires: 1973-03-31
Abstract
No abstract record available.
Inventors
- 👤 Robert W Rosel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L11/121; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/10; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20456
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) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |