US3503097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for perforating films of thermoplastic material
Assignee: Reynolds Metals Co
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Filing: 1967-11-13
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Granted: 1970-03-31
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Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 J Paul Krupp Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:20
CPC Classifications
B; B65; B65D; B65D71/00; B65D71/06; B65D71/08; B26; B26F; B26F1/00; B26F1/02; B26F1/06; B26F3/00; B26F3/06; B26F3/08; B29; B29C; B29C66/00; B29C66/004; B29C66/0042; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C66/818; B29C66/8182; B29C66/81821; B29C66/82; B29C66/822; B29C66/8222; B29C66/8226; B29C66/82265; B29C66/83; B29C66/834; B29C66/8351; B29C66/83541; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91212; B29C66/91231; B29C66/914; B29C66/9141; B29C66/91421; B29C66/70; B29C66/71; Y; Y10; Y10T; Y10T83/00; Y10T83/283; Y10T83/293; Y10T83/465; Y10T83/4766; Y10T83/4783
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 |