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US3491413A
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US
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Assignee: Individual
•
Filing: 1966-10-19
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Granted: 1970-01-27
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Expires: 1986-10-19
Abstract
No abstract record available.
Inventors
- 👤 Hans Porepp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:57
CPC Classifications
B; B29; B29D; B29D5/00; B29D5/06; A; A44; A44B; A44B19/00; A44B19/10; A44B19/12; B21; B21D; B21D53/00; B21D53/46; B21D53/50; B29D5/04; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2518
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3149387A
Cited
US3015868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |