Patent US3431620A successfully refreshed from Google Patents.
US3431620A
Expired / Lapsed
US
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Apparatus for assembly of tube and center radiator cores
Assignee: Valeo Engine Cooling Inc
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Filing: 1966-07-19
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Granted: 1969-03-11
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Expires: 1986-07-19
Abstract
No abstract record available.
Inventors
- 👤 Richard E Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:49
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53113; Y10T29/53313; Y10T29/53383; Y10T29/53396
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |