Patent US2873871A successfully refreshed from Google Patents.
US2873871A
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Boom locking apparatus for a back hoe
Assignee: J P WAITE Inc
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Filing: 1955-07-05
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Granted: 1959-02-17
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Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 John P Waite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:50
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/38; E02F3/382; E02F3/42; E02F9/00; E02F9/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US756831A
Cited
US2228865A
Cited
US2303852A
Cited
US2553912A
Cited
US2718312A
Cited
US2627985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |