US3520754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heat sealing a thermoplastic cover material to a backing member
Assignee: Scholl Manufacturing Co Inc
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Filing: 1967-02-16
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Granted: 1970-07-14
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Expires: 1987-02-16
Abstract
No abstract record available.
Inventors
- 👤 Carl W Scholl
- 👤 Milo L Raffaelli Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:56
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/02; B29C63/04; B26; B26F; B26F3/00; B26F3/06; B29C2793/00; B29C65/00; B29C65/02; B29C65/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1034
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) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |