US2813573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making corrugated flexible hose
Assignee: Individual
•
Filing: 1954-07-02
•
Granted: 1957-11-19
•
Expires: 1974-07-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:33
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/18; B29C; B29C49/00; B29C49/42; B29C49/44; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29K; B29K2021/00; B29L; B29L2023/00; B29L2023/18; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2396059A
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US2394270A
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US2486763A
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US2524679A
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US2584501A
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US2490513A
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US2644487A
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GB652810A
Cited
US2712157A
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US2713381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |