Patent US3073397A successfully refreshed from Google Patents.
US3073397A
Expired / Lapsed
US
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Portable digger
Assignee: MCCABE POWERS BODY Co
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Filing: 1959-05-11
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Granted: 1963-01-15
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Expires: 1979-05-11
Abstract
No abstract record available.
Inventors
- 👤 Roy O Balogh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:13
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/087
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
136 words
A PORTABLE HOLE-DIGGING DEVICE COMPRISING A BASE, A BOOM PIVOTALLY MOUNTED ON THE BASE, AND HAVING A PAIR OF CONVERGING MEMBERS, AN END FITTING MOUNTED ON THE END OF SAID CONVERGING MEMBERS AND HAVING A FIRST PAIR OF DOWNWARDLY EXTENDING EARS ADJACENT THE OUTER END OF SAID BOOM, A TRANSVERSELY EXTENDING PIN MOUNTED BETWEEN SAID FIRST PAIR OF EARS, A POST-HOLE DIGGER SWINGABLY MOUNTED AT ITS UPPER END UPON THE SAID PIN AND BEING ADAPTED FOR MOVEMENT INTO AN INOPERATIVE TRANSPORT POSITION IN WHICH IT EXTENDS LENGTHWISE ALONG THE BOOM, A SLEEVE MEMBER SECURED TO SAID END FITTING AT ONE END, A SECOND PAIR OF DOWNWARDLY EXTENDING EARS MOUNTED ON THE OTHER END OF SAID SLEEVE MEMBER, AND MANUALLY RELEASABLE CATCH MEANS ON SAID SECOND PAIR OF EARS FOR HOLDING THE DIGGER IN SAID TRANSPORT POSITION.
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |