US2644487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced flexible conduit
Assignee: CHICAGO METAL HOSE Corp
•
Filing: 1948-02-13
•
Granted: 1953-07-07
•
Expires: 1968-02-13
Abstract
No abstract record available.
Inventors
- 👤 Frank S Schindler
- 👤 Richard K Titus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:13
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US278312A
Cited
US309087A
Cited
US1020002A
Cited
US1049542A
Cited
GB256191A
Cited
US1835314A
Cited
US2106496A
Cited
US1826666A
Cited
US1984002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |