US2476273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus sensitive to magnetic fields
Assignee: PURVES Corp
•
Filing: 1942-09-17
•
Granted: 1949-07-19
•
Expires: 1962-09-17
Abstract
No abstract record available.
Inventors
- 👤 Lennox F Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:01
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; G01C; G01C17/00; G01C17/02; G01C17/28; G01C17/30; Y; Y10; Y10S; Y10S425/00; Y10S425/033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2158500A
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US2241499A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |