Patent US2903744A successfully refreshed from Google Patents.
US2903744A
Expired / Lapsed
US
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Apparatus for making corrugated flexible rubber tubes
Assignee: Thermoid Co
•
Filing: 1954-09-17
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Granted: 1959-09-15
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Expires: 1974-09-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Harrison
- 👤 Richard W Asay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:28
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/18; B29C; B29C67/00; B29C67/0014; B29C67/0022; B29C67/0025; B29K; B29K2021/00; Y; Y10; Y10S; Y10S264/00; Y10S264/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US2647280A
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US2782803A
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |