Patent US3021245A successfully refreshed from Google Patents.
US3021245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a reinforced corrugated hose
Assignee: Individual
•
Filing: 1956-06-29
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Granted: 1962-02-13
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Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 Fred T Roberts
- 👤 Robert E Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:11
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/18; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE METHOD OF MAKING REENFORCED CORRUGATED HOSE HAVING A MOLDED INNER SURFACE AND THE REENDORCEMENTS ACCURATELY LOCATED WITH RESPECT TO THE CORRUGATIONS, COMPRISING THE STEPS OF POSITIONING RESILIENT REENFORCING MEANS ON A CORRUGATED MANDREL WITH COILS OF THE REENFORCING MEANS POSITIONED AND HELD ON THE CRESTS OF THE CORRUGATIONS OF THE MANDREL, SAID MANDREL BEING HOLLOW AND HAVING PASSAGES EXTENDING TO THE CORRUGATED SURFACE THEREOF, COVERING THE CORRUGATED MANDREL WITH THE COILS OF THE
Claim 2
Independent Claim
74 words
THE METHOD OF MAKING REENFORCED CORRUGATED HOSE HAVING A MOLDED INNER SURFACE AND THE REENDORCEMENTS ACCURATELY LOCATED WITH RESPECT TO THE CORRUGATIONS, COMPRISING THE STEPS OF POSITIONING RESILIENT REENFORCING MEANS ON A CORRUGATED MANDREL WITH COILS OF THE REENFORCING MEANS POSITIONED AND HELD ON THE CRESTS OF THE CORRUGATIONS OF THE MANDREL, SAID MANDREL BEING HOLLOW AND HAVING PASSAGES EXTENDING TO THE CORRUGATED SURFACE THEREOF, COVERING THE CORRUGATED MANDREL WITH THE COILS OF THE
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Cited
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US2780273A
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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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |