Patent US2903786A successfully refreshed from Google Patents.
US2903786A
Expired / Lapsed
US
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Coil spring installation and removal tool
Assignee: Individual
•
Filing: 1955-10-17
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Granted: 1959-09-15
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Expires: 1975-10-17
Abstract
No abstract record available.
Inventors
- 👤 John W Sheffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:38
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/14; B25B27/30; B25B27/302; B25B27/304
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US849664A
Cited
GB190718090A
Cited
US1384969A
Cited
US1525174A
Cited
US1468526A
Cited
US2589042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |