US1751981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact plug
Assignee: Koninklijke Philips NV
•
Filing: 1924-05-31
•
Granted: 1930-03-25
•
Expires: 1944-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jong Hendrik De
- 👤 Jr Dirk Lely
- 👤 Shepherd Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/04; H01R13/05; H01R13/052; H01R24/00; H01R24/28; H01R2103/00
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) | 1933-03-24 | 1933-09-23 | 1934-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-24 | 1937-09-23 | 1938-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-24 | 1941-09-23 | 1942-03-25 | $7700.00 | Window Closed / Lapsed |