US1777433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signaling system
Assignee: Individual
•
Filing: 1924-10-04
•
Granted: 1930-10-07
•
Expires: 1944-10-04
Abstract
No abstract record available.
Inventors
- 👤 Hale George William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:08
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B5/00; H04B5/20; H04B5/22; H04B5/24; H04B5/26; H04B5/263
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) | 1933-10-06 | 1934-04-07 | 1934-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-10-06 | 1938-04-07 | 1938-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-10-06 | 1942-04-07 | 1942-10-07 | $7700.00 | Window Closed / Lapsed |