US3013429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broken filament detector
Assignee: EIDP Inc
•
Filing: 1958-10-13
•
Granted: 1961-12-19
•
Expires: 1978-10-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Norvin G Maloney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:17
CPC Classifications
B; B65; B65H; B65H63/00; B65H63/02; B65H63/024; B65H63/028; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1632591A
Cited
US2231537A
Cited
US2242889A
Cited
US2302081A
Cited
US2524579A
Cited
US2826911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |