US2674760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube cleaning apparatus
Assignee: Jones and Laughlin Steel Corp
•
Filing: 1952-04-09
•
Granted: 1954-04-13
•
Expires: 1972-04-09
Abstract
No abstract record available.
Inventors
- 👤 Harry J Finch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:47
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; B08B9/0321; B08B9/0328; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/46; Y10T408/52; Y10T408/54; Y10T408/55; Y10T408/563; Y10T408/5633; Y10T408/56337
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US913260A
Cited
US1014333A
Cited
US2003668A
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US1984771A
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US2210531A
Cited
US2361660A
Cited
US2426095A
Cited
US2404161A
Cited
US2494380A
Cited
US2606846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |