US2860373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament guide
Assignee: EIDP Inc
•
Filing: 1952-07-29
•
Granted: 1958-11-18
•
Expires: 1972-07-29
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Charles Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:19
CPC Classifications
D; D01; D01D; D01D11/00; D01D11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US266675A
Cited
US1592006A
Cited
US1676003A
Cited
US2173789A
Cited
US2252684A
Cited
US2241405A
Cited
US2542973A
Cited
GB710582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |