US2487681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical gauging device
Assignee: Individual
•
Filing: 1945-10-18
•
Granted: 1949-11-08
•
Expires: 1965-10-18
Abstract
No abstract record available.
Inventors
- 👤 Weisselberg Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:42
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/225; G01L1/2262; G01L1/2206; Y; Y10; Y10S; Y10S33/00; Y10S33/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1641296A
Cited
US1928457A
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US2316975A
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US2321322A
Cited
US2322319A
Cited
US2344642A
Cited
US2316203A
Cited
US2336500A
Cited
US2377869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |