Patent US2708461A successfully refreshed from Google Patents.
US2708461A
Expired / Lapsed
US
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Apparatus for assembling coil spring units
Assignee: JOHN R GREENO CO
•
Filing: 1951-03-29
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Granted: 1955-05-17
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Expires: 1971-03-29
Abstract
No abstract record available.
Inventors
- 👤 John R Greeno
- 👤 Thomas J Dull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:28
CPC Classifications
B; B21; B21F; B21F33/00; B21F33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1905459A
Cited
US1817087A
Cited
US1864216A
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US1941657A
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US1920862A
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US2026276A
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US2177054A
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US2031894A
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US2112991A
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US2064560A
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US2176262A
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US2231744A
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US2286326A
Cited
US2296878A
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US2388106A
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US2470812A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |