Patent US2850796A successfully refreshed from Google Patents.
US2850796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for cold-working piping, tubing and the like
Assignee: Individual
•
Filing: 1955-04-27
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Granted: 1958-09-09
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Expires: 1975-04-27
Abstract
No abstract record available.
Inventors
- 👤 Kaplowitz Fred
- 👤 Vilella Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:30
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; B21D1/00; B21D1/06; B21D1/08; Y; Y10; Y10S; Y10S264/00; Y10S264/66; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |