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US3501368A
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Interlining
Assignee: Carl Freudenberg KG
•
Filing: 1968-07-12
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Granted: 1970-03-17
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Expires: 1988-07-12
Abstract
No abstract record available.
Inventors
- 👤 Robert Schabert
- 👤 Wilhelm Buchsenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:45
CPC Classifications
D; D06; D06M; D06M17/00; D06M17/04; D06M17/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2746
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2240326A
Cited
GB556813A
Cited
US2456344A
Cited
US2676324A
Cited
US2715591A
Cited
US2992149A
Cited
US3223575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |