US3221771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulated boom structure with stabilizing structure
Assignee: MISSISSIPPI VALLEY STRUCTURAL STEEL CO
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Filing: 1963-03-04
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Granted: 1965-12-07
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Francis A Dollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:38
CPC Classifications
B; B67; B67D; B67D9/00; B67D9/02; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/8807
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
AN ARTICULATED BOOM CONSTRUCTION INCLUDING: A VERTICAL SUPPORTING STRUCTURE, A VERTICAL RISER, A BOOM HAVING AN INBOARD PORTION PIVOTALLY CONNECTED ON A HORIZONTAL AXIS TO THE UPPER END PORTION OF THE RISER, A BRIDLE STRUCTURE ATTACHED TO SAID INBOARD PORTION OF THE BOOM AND HAVING A STABILIZER STRADDLING THE PIVOTAL CONNECTION OF THE BOOM AND THE RISER AND HAVING A PIVOTAL FULCRUM WITH ITS AXIS COAXIAL WITH SAID HORIZONTAL AXIS, AND ACTUATING MEANS CONNECTED TO SAID BRIDLE STRUCTURE AND OPERABLE FOR THEREBY PIVOTALLY ACTUATING THE BOOM RELATIVE TO THE STANDARD.
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |