Patent US1004420A successfully refreshed from Google Patents.
US1004420A
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US
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Contacting device for electrical measuring and indicating instruments.
Assignee: WC Heraus GmbH and Co KG
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Filing: 1907-12-21
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Granted: 1911-09-26
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Expires: 1927-12-21
Abstract
No abstract record available.
Inventors
- 👤 Ernst Haagn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:12
CPC Classifications
G; G01; G01D; G01D13/00; G01D13/22; G01D13/26
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) | 1914-09-25 | 1915-03-27 | 1915-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-09-25 | 1919-03-27 | 1919-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-09-25 | 1923-03-27 | 1923-09-26 | $7700.00 | Window Closed / Lapsed |