Patent US2261864A successfully refreshed from Google Patents.
Patent US3503288A successfully refreshed from Google Patents.
US3503288A
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US
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Apparatus for transversely cutting a plurality of small hollow plastic tubular elements embedded in a solid matrix of plastic material to maintain the ends thereof open
Assignee: Individual
•
Filing: 1967-05-22
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Granted: 1970-03-31
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Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 Lennart Gerhard Swartling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:26
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/02; B01D63/021; B01D63/022; B01D63/0224; B26; B26D; B26D3/00; B26D3/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861; Y10T407/00; Y10T407/28; Y10T82/00; Y10T82/16; Y10T82/16016; Y10T82/16032; Y10T82/16426; Y10T82/16967
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) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |