US3371381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing corrougated or convoluted hose
Assignee: John Bull Rubber Co Ltd
•
Filing: 1965-03-10
•
Granted: 1968-03-05
•
Expires: 1985-03-10
Abstract
No abstract record available.
Inventors
- 👤 Louth Noel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:40
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29D; B29D23/00; B29D23/18; B29C2049/4879; B29C2049/4881; B29K; B29K2021/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2306018A
Cited
US2616129A
Cited
US2866230A
Cited
US2897840A
Cited
US3076228A
Cited
US3168604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |