Patent US3977135A successfully refreshed from Google Patents.
Patent US3011258A successfully refreshed from Google Patents.
US3011258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center punch with hammer and magnifier
Assignee: Individual
•
Filing: 1958-05-23
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Granted: 1961-12-05
•
Expires: 1978-05-23
Abstract
No abstract record available.
Inventors
- 👤 Charles J Kotchan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:54
CPC Classifications
B; B25; B25D; B25D5/00; B25D1/00; B25D1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1175274A
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US1170422A
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US1455441A
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US1449136A
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US1685707A
Cited
US2455972A
Cited
US2623774A
Cited
US2663936A
Cited
US2813511A
Cited
US2909351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |