Patent US1233211A successfully refreshed from Google Patents.
US1233211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for telegraphing under water.
Assignee: Individual
•
Filing: 1916-01-17
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Granted: 1917-07-10
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Expires: 1936-01-17
Abstract
No abstract record available.
Inventors
- 👤 Frank P Fisher
- 👤 Hugh Dehart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:34
CPC Classifications
H; H04; H04B; H04B13/00; H04B13/02; G; G01; G01V; G01V3/00; G01V3/02
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) | 1920-07-09 | 1921-01-08 | 1921-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-07-09 | 1925-01-08 | 1925-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-07-09 | 1929-01-08 | 1929-07-10 | $7700.00 | Window Closed / Lapsed |