Patent US2573531A successfully refreshed from Google Patents.
US2573531A
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Offset contact alignment indicator
Assignee: Tobin Arp Manufacturing Co
•
Filing: 1947-06-06
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Granted: 1951-10-30
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Expires: 1967-06-06
Abstract
No abstract record available.
Inventors
- 👤 Ewald A Arp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:40
CPC Classifications
B; B23; B23B; B23B41/00; B23B41/12; G; G01; G01B; G01B3/00; G01B3/22; G01B3/26
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |