US2863209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bore calibrating stamp
Assignee: K Klopfer A-G Werkzeug- und Maschinenfabrik
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Filing: 1955-04-19
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Granted: 1958-12-09
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Expires: 1975-04-19
Abstract
No abstract record available.
Inventors
- 👤 Klopfer Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:06
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/30; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T407/00; Y10T407/10; Y10T407/24; Y10T408/00; Y10T408/89; Y10T408/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1182971A
Cited
US1361568A
Cited
US1466953A
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US2180823A
Cited
US2230455A
Cited
US2233928A
Cited
US2388948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |