Patent US2991129A successfully refreshed from Google Patents.
Patent US3348748A successfully refreshed from Google Patents.
US3348748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic sheet advancing apparatus
Assignee: Kirkhof Manufacturing Corp
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Filing: 1965-07-22
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Granted: 1967-10-24
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Expires: 1985-07-22
Abstract
No abstract record available.
Inventors
- 👤 Robert E O'brien
- 👤 Edward C Markowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:20
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/261
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
ADVANCING APPARATUS FOR ELONGATED PLASTIC WEB STOCK COMPRISING: A PAIR OF PARALLEL ELONGATED COPLANAR GLIDE ELEMENTS HAVING GLIDE SURFACE MEANS FOR ENGAGING ONE FACE OF THE OPPOSITE EDGES OF THE WEB; ENDLESS RECIRCULATORY DRIVE ELEMENTS ADJACENT THE RESPECTIVE ONES OF SAID GLIDE SURFACE MEANS, EACH HAVING ALONG ITS LENGTH A PLURALITY OF WEB INDENT GRIPPERS AND A PLURALITY OF INTERMEDIATE ELONGATED WEB PUNCTURE ELEMENTS; SAID GLIDE ELEMENT SURFACE MEANS BEING ALIGNED WITH SAID INDENT GRIPPERS TO ALLOW WEB GRIPPING THEREBETWEEN; SAID ELONGATED PUNCTURE ELEMENTS NORMALLY PROJECTING PAST SAID SURFACE MEANS TO PUNCTURE A WEB THEREON AND PROJECTING INTO RECEIVING SPACE ADJACENT SAID SURFACE MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |