Patent US3304041A successfully refreshed from Google Patents.
US3304041A
Expired / Lapsed
US
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Adjustable support for excavation batter boards
Assignee: Individual
•
Filing: 1966-01-13
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Granted: 1967-02-14
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Expires: 1986-01-13
Abstract
No abstract record available.
Inventors
- 👤 Priore Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:17
CPC Classifications
E; E02; E02F; E02F1/00; E04; E04G; E04G21/00; E04G21/14; E04G21/16; E04G21/18; E04G21/1808; E04G21/1833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US454553A
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US759560A
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US791713A
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US884772A
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AU2339529A
Cited
US2464672A
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US2423933A
Cited
US2780869A
Cited
US2931613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |