Patent US2718315A successfully refreshed from Google Patents.
US2718315A
Expired / Lapsed
US
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Stacker mechanism for coil springs
Assignee: WUNDERLICH SPRING MACHINERY CO
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Filing: 1954-10-06
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Granted: 1955-09-20
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Expires: 1974-10-06
Abstract
No abstract record available.
Inventors
- 👤 Martin J Nelson
- 👤 Thaddens S Cetnar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:44
CPC Classifications
B; B21; B21F; B21F35/00; B21F33/00; B21F33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |