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US2507437A
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Coolant return system
Assignee: George Gorton Machine Co
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Filing: 1948-12-15
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Granted: 1950-05-09
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Expires: 1968-12-15
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Eserkaln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:57
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/10; Y; Y10; Y10S; Y10S29/00; Y10S29/078; Y10S29/101; Y10S62/00; Y10S62/10; Y10S82/00; Y10S82/90; Y10T; Y10T409/00; Y10T409/30; Y10T409/303976
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US995256A
Cited
US1938777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |