US2665420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant energy system for distance measuring
Assignee: Sunoco Inc
•
Filing: 1949-04-19
•
Granted: 1954-01-05
•
Expires: 1969-04-19
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Winterhalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/88; G01S17/93; G01S1/00; G01S1/02; G01S13/00; G01S13/74; G01S13/82; G01S13/84
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1969537A
Cited
FR708277A
Cited
US2234329A
Cited
US2248727A
Cited
GB581568A
Cited
US2404696A
Cited
US2470787A
Cited
US2529510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |