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Patent US3057651A successfully refreshed from Google Patents.
US3057651A
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US
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Tool for handling building blocks
Assignee: BLOCKLIFTER Corp
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Filing: 1960-05-06
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Granted: 1962-10-09
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Expires: 1980-05-06
Abstract
No abstract record available.
Inventors
- 👤 Lloyd Jim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:59
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/44; B66C1/54; E; E04; E04G; E04G21/00; E04G21/14; E04G21/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US294147A
Cited
US592499A
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US2216676A
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US2558114A
Cited
US2738219A
Cited
GB733582A
Cited
US2761726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |