US2450166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical detection apparatus
Assignee: Individual
•
Filing: 1944-08-18
•
Granted: 1948-09-28
•
Expires: 1964-08-18
Abstract
No abstract record available.
Inventors
- 👤 Nicholas S Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:53
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1751330A
Cited
US1715543A
Cited
US1992214A
Cited
US1880805A
Cited
US2201146A
Cited
US2243341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |