Patent US2567520A successfully refreshed from Google Patents.
US2567520A
Expired / Lapsed
US
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Tension regulation coil spring
Assignee: Individual
•
Filing: 1948-10-11
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Granted: 1951-09-11
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Expires: 1968-10-11
Abstract
No abstract record available.
Inventors
- 👤 William K Mcinerney
- 👤 James M Mcinerney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:27
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/70; B60N2/7023; B60N2/7035; B60N2/7047; B60N2/7058; B60N2/7064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US198833A
Cited
US683344A
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US1254314A
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US1192510A
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US1333801A
Cited
US1544237A
Cited
US1544415A
Cited
US1931744A
Cited
US2247543A
Cited
US2241039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |