Patent US2108117A successfully refreshed from Google Patents.
US2108117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signaling system
Assignee: International Standard Electric Corp
•
Filing: 1936-01-24
•
Granted: 1938-02-15
•
Expires: 1956-01-24
Abstract
No abstract record available.
Inventors
- 👤 Gardere Henri
- 👤 Pages Andre Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/02; H04J1/06; H03; H03C; H03C1/00; H03C1/52; H04J1/065; H04L; H04L27/00; H04L27/18; H04L27/22; H04L27/227; H04L27/2275; H04L27/2277
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1941-02-14 | 1941-08-16 | 1942-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-02-14 | 1945-08-16 | 1946-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-02-14 | 1949-08-16 | 1950-02-15 | $7700.00 | Window Closed / Lapsed |