US2423104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direction indicating apparatus
Assignee: International Standard Electric Corp
•
Filing: 1941-03-13
•
Granted: 1947-07-01
•
Expires: 1961-03-13
Abstract
No abstract record available.
Inventors
- 👤 Labin Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:47
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2003933A
Cited
US2143035A
Cited
US2227598A
Cited
US2207267A
Cited
US2189549A
Cited
US2216707A
Cited
GB526658A
Cited
GB520081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |