Patent US2766516A successfully refreshed from Google Patents.
US2766516A
Expired / Lapsed
US
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Manufacture of hollow spring pins
Assignee: Elastic Stop Nut Corp
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Filing: 1951-11-19
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Granted: 1956-10-16
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Expires: 1971-11-19
Abstract
No abstract record available.
Inventors
- 👤 Samuel W Chantler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:38
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/02; B21D51/10; B21D53/00; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/14; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979; Y10T29/51; Y10T29/5116
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2248720A
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US2222842A
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FR890122A
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US2444463A
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US2621622A
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US2582062A
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US2582063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |