US2452023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safe failure measuring and controlling apparatus
Assignee: Brown Instruments Co
•
Filing: 1947-03-15
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Granted: 1948-10-19
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Expires: 1967-03-15
Abstract
No abstract record available.
Inventors
- 👤 Rudolf F Wild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:15
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/021; Y; Y10; Y10S; Y10S411/00; Y10S411/915
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) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |