Patent US932819A successfully refreshed from Google Patents.
US932819A
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Oscilliameter.
Assignee: INTERNATIONAL TELEGRAPH CONSTRUCTION Co
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Filing: 1906-12-11
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Granted: 1909-08-31
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Expires: 1926-12-11
Abstract
No abstract record available.
Inventors
- 👤 Harry Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:19
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/34
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) | 1912-08-30 | 1913-03-01 | 1913-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-08-30 | 1917-03-01 | 1917-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-08-30 | 1921-03-01 | 1921-08-31 | $7700.00 | Window Closed / Lapsed |