US3104409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler tube scale remover
Assignee: Individual
•
Filing: 1960-10-21
•
Granted: 1963-09-24
•
Expires: 1980-10-21
Abstract
No abstract record available.
Inventors
- 👤 Herschel J West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:53
CPC Classifications
F; F28; F28G; F28G3/00; F28G3/10; F28G3/14; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4506; Y10T29/4528
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A SCALE REMOVER COMPRISING A SPINDLE, A SERIES OF CUTTING DISKS LOOSELY MOUNTED FOR LIMITED RADIAL AND ROTARY MOVEMENT ON THE SPINDLE AND POSITIVELY DRIVEN THEREBY, AND MEANS FOR ROTATING SAID SPINDLE, SAID MEANS INCLUDING A DRIVE SHAFT CONNECTED OFF-CENTER TO ONE END OF THE SPINDLE.
References Cited (Backward Citations)
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US929489A
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GB191106427A
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US1671684A
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US1725299A
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US1891820A
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US1873478A
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US2199109A
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US2987801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |