US1430902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-signal system
Assignee: Individual
•
Filing: 1918-05-10
•
Granted: 1922-10-03
•
Expires: 1938-05-10
Abstract
No abstract record available.
Inventors
- 👤 Jr John Hays Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:30
CPC Classifications
F; F41; F41G; F41G7/00; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/38; F42B12/382; F42B19/00; F42B19/01; F42B19/10
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) | 1925-10-02 | 1926-04-03 | 1926-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-10-02 | 1930-04-03 | 1930-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-10-02 | 1934-04-03 | 1934-10-03 | $7700.00 | Window Closed / Lapsed |