Patent US1951860A successfully refreshed from Google Patents.
US1951860A
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Method of making unions for metal tubing
Assignee: Individual
•
Filing: 1931-06-22
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Granted: 1934-03-20
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Expires: 1951-06-22
Abstract
No abstract record available.
Inventors
- 👤 Cowles Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49909; Y10T29/49915; Y10T29/4992; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T29/49934
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) | 1937-03-19 | 1937-09-18 | 1938-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-03-19 | 1941-09-18 | 1942-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-03-19 | 1945-09-18 | 1946-03-20 | $7700.00 | Window Closed / Lapsed |