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Patent US2645453A successfully refreshed from Google Patents.
US2645453A
Expired / Lapsed
US
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Post driving apparatus
Assignee: Individual
•
Filing: 1949-05-13
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Granted: 1953-07-14
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Expires: 1969-05-13
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:45
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/06; B60P1/14; E; E04; E04H; E04H17/00; E04H17/26; E04H17/261; E04H17/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |