US2497378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygrometer
Assignee: Individual
•
Filing: 1947-05-23
•
Granted: 1950-02-14
•
Expires: 1967-05-23
Abstract
No abstract record available.
Inventors
- 👤 Warren E Talbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:26
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US20326A
Cited
US183062A
Cited
FR345009A
Cited
US1336380A
Cited
US2034884A
Cited
US1958812A
Cited
US2137024A
Cited
US2231609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |