Patent US2615316A successfully refreshed from Google Patents.
US2615316A
Expired / Lapsed
US
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Spring wheel construction
Assignee: Individual
•
Filing: 1948-10-30
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Granted: 1952-10-28
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Expires: 1968-10-30
Abstract
No abstract record available.
Inventors
- 👤 Kirwin Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; F16H2055/366
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US519807A
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US604883A
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US1323235A
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US1000322A
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US1054118A
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US1071953A
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US1133882A
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US1244681A
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US1461408A
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US2463226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |