US2476239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for indicator gauges
Assignee: Individual
•
Filing: 1945-02-24
•
Granted: 1949-07-12
•
Expires: 1965-02-24
Abstract
No abstract record available.
Inventors
- 👤 Harold E Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:58
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/0002; G01B5/0004; Y; Y10; Y10S; Y10S248/00; Y10S248/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |