US2657760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Cameron Solutions Inc
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Filing: 1950-01-09
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Granted: 1953-11-03
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Expires: 1970-01-09
Abstract
No abstract record available.
Inventors
- 👤 Clarence O Glasgow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:07
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/34; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0211; B01D17/0214
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2009646A
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US2179131A
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US2349944A
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US2525154A
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US2601903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |