Patent US1822189A successfully refreshed from Google Patents.
US1822189A
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US
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Method of reducing the extension of wire ropes
Assignee: Felten and Guilleaume Carlswerk AG
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Filing: 1930-04-16
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Granted: 1931-09-08
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Expires: 1950-04-16
Abstract
No abstract record available.
Inventors
- 👤 Zapf Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:52
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B2201/00; D07B2201/20; D07B2201/2083; D07B2201/2089; D07B2401/00; D07B2401/20; D07B2401/2005; D07B2401/201; D07B2501/00; D07B2501/20; D07B2501/2015; D07B2501/203
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) | 1934-09-07 | 1935-03-09 | 1935-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-07 | 1939-03-09 | 1939-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-07 | 1943-03-09 | 1943-09-08 | $7700.00 | Window Closed / Lapsed |