Patent US3513997A successfully refreshed from Google Patents.
US3513997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Coles Krane GmbH
•
Filing: 1968-01-16
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Granted: 1970-05-26
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Expires: 1988-01-16
Abstract
No abstract record available.
Inventors
- 👤 Heinrich W Heyer
- 👤 Heinz Spitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:28
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/62; B66C1/66; B66C1/663; B60; B60P; B60P1/00; B60P1/64; B60P1/6418; B60P1/6472; B66C23/00; B66C2700/00; B66C2700/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1435604A
Cited
US1399053A
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US2660319A
Cited
US2656058A
Cited
US2996206A
Cited
US2781924A
Cited
US2935214A
Cited
US3057490A
Cited
FR1335765A
Cited
US3174630A
Cited
FR1489605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |