US1233522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sounding apparatus.
Assignee: Individual
•
Filing: 1914-03-24
•
Granted: 1917-07-17
•
Expires: 1934-03-24
Abstract
No abstract record available.
Inventors
- 👤 Frank Stevens
- 👤 George F Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:01
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/18
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) | 1920-07-16 | 1921-01-15 | 1921-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-07-16 | 1925-01-15 | 1925-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-07-16 | 1929-01-15 | 1929-07-17 | $7700.00 | Window Closed / Lapsed |