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US1770592A
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Method and apparatus for treating artificial silk
Assignee: Individual
•
Filing: 1925-09-29
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Granted: 1930-07-15
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Expires: 1945-09-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Firsching
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:33
CPC Classifications
D; D06; D06F; D06F73/00; D06F73/02; D04; D04B; D04B35/00; D04B35/22; D04B35/24; Y; Y10; Y10S; Y10S118/00; Y10S118/22
Claims Analysis
Total Claims: 0
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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) | 1933-07-14 | 1934-01-13 | 1934-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-07-14 | 1938-01-13 | 1938-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-07-14 | 1942-01-13 | 1942-07-15 | $7700.00 | Window Closed / Lapsed |