Patent US2818636A successfully refreshed from Google Patents.
US2818636A
Expired / Lapsed
US
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Method of manufacturing reinforced flexible conduit
Assignee: CHICAGO METAL HOSE Corp
•
Filing: 1949-05-26
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Granted: 1958-01-07
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Expires: 1969-05-26
Abstract
No abstract record available.
Inventors
- 👤 Fentress David Wendell
- 👤 Frank S Schindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:43
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04; B21D15/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877
Claims Analysis
Total Claims: 0
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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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |