Patent US728020A successfully refreshed from Google Patents.
US728020A
Expired / Lapsed
US
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Shaping-wheels for sheet-metal-pipe-crimping machines.
Assignee: A W GLESSNER
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Filing: 1902-12-18
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Granted: 1903-05-12
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Expires: 1922-12-18
Abstract
No abstract record available.
Inventors
- 👤 Albert G Scherer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:18
CPC Classifications
B; B21; B21D; B21D13/00; B21D13/04; B21D13/045
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) | 1906-05-11 | 1906-11-10 | 1907-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-05-11 | 1910-11-10 | 1911-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-05-11 | 1914-11-10 | 1915-05-12 | $7700.00 | Window Closed / Lapsed |