Patent US3449187A successfully refreshed from Google Patents.
US3449187A
Expired / Lapsed
US
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Method and apparatus for making nonwoven fabrics
Assignee: Individual
•
Filing: 1964-12-09
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Granted: 1969-06-10
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Expires: 1984-12-09
Abstract
No abstract record available.
Inventors
- 👤 Emilian Bobkowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:51
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16; D04H5/00; D04H5/06; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T442/00; Y10T442/60; Y10T442/643
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |