US2423885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant energy detecting apparatus
Assignee: Individual
•
Filing: 1941-02-03
•
Granted: 1947-07-15
•
Expires: 1961-02-03
Abstract
No abstract record available.
Inventors
- 👤 Hammond Laurens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:32
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/12; F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2253; F41G7/2273; F41G7/2293; G01; G01C; G01C11/00; G01C11/02; G01C11/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1303105A
Cited
US1099199A
Cited
US1158967A
Cited
US1639411A
Cited
US1343393A
Cited
US1542937A
Cited
US1984112A
Cited
US2016036A
Cited
US2008793A
Cited
US2237193A
Cited
US2199725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |