Patent US1696229A successfully refreshed from Google Patents.
US1696229A
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Method for forming flanges on pipes
Assignee: Midwest Piping & Supply Compan
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Filing: 1926-08-17
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Granted: 1928-12-25
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Expires: 1946-08-17
Abstract
No abstract record available.
Inventors
- 👤 Fred C Fantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:55
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/02; Y; Y10; Y10S; Y10S29/00; Y10S29/043
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) | 1931-12-25 | 1932-06-25 | 1932-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-12-25 | 1936-06-25 | 1936-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-12-25 | 1940-06-25 | 1940-12-25 | $7700.00 | Window Closed / Lapsed |