US1353025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical signaling apparatus
Assignee: Sir WG Armstrong Whitworth and Co Engineers Ltd
•
Filing: 1919-04-15
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Granted: 1920-09-14
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Expires: 1939-04-15
Abstract
No abstract record available.
Inventors
- 👤 Chicken Christopher Brunswick
- 👤 Thain Joseph Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:31
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/38; G08C19/40; G08C19/44; G08B; G08B5/00; G08B5/22; G08C15/00; G08C15/02; G08C15/04
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) | 1923-09-14 | 1924-03-15 | 1924-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-09-14 | 1928-03-15 | 1928-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-09-14 | 1932-03-15 | 1932-09-14 | $7700.00 | Window Closed / Lapsed |