Patent US1599792A successfully refreshed from Google Patents.
US1599792A
Expired / Lapsed
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Apparatus for making heat-exchange units
Assignee: SAGE RADIATOR Co Inc
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Filing: 1923-06-19
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Granted: 1926-09-14
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Expires: 1943-06-19
Abstract
No abstract record available.
Inventors
- 👤 Charles S Sage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:20
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; B21D53/085; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5136; Y10T29/5137; Y10T29/5142; Y10T29/53; Y10T29/53113; Y10T29/53122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-09-13 | 1930-03-15 | 1930-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-09-13 | 1934-03-15 | 1934-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-09-13 | 1938-03-15 | 1938-09-14 | $7700.00 | Window Closed / Lapsed |