US2142106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signaling system and glow lamps therefor
Assignee: Individual
•
Filing: 1934-05-09
•
Granted: 1939-01-03
•
Expires: 1954-05-09
Abstract
No abstract record available.
Inventors
- 👤 Hans P Boswau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/307; H; H01; H01J; H01J61/00; H01J61/64; Y; Y10; Y10S; Y10S315/00; Y10S315/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-01-02 | 1942-07-04 | 1943-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-02 | 1946-07-04 | 1947-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-02 | 1950-07-04 | 1951-01-03 | $7700.00 | Window Closed / Lapsed |