Patent US2877495A successfully refreshed from Google Patents.
US2877495A
Expired / Lapsed
US
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Process and apparatus for melt spinning
Assignee: Perfogit SpA
•
Filing: 1952-07-29
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Granted: 1959-03-17
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Expires: 1972-07-29
Abstract
No abstract record available.
Inventors
- 👤 Wegener Harry
- 👤 Bruni Gaetano
- 👤 Notarbartolo Luigi
- 👤 Muench Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:41
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1747552A
Cited
US1807054A
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US1834631A
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US2253176A
Cited
US2278875A
Cited
US2371213A
Cited
US2280706A
Cited
US2382723A
Cited
US2404406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |