Patent US2833422A successfully refreshed from Google Patents.
US2833422A
Expired / Lapsed
US
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Telescopic boom
Assignee: American LaFrance LLC
•
Filing: 1950-12-28
•
Granted: 1958-05-06
•
Expires: 1970-12-28
Abstract
No abstract record available.
Inventors
- 👤 Ferwerda Ray
- 👤 Ferwerda Sophia Louise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:46
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/413; E02F3/4136; E02F3/283; E02F3/286; E02F3/42
Claims Analysis
Total Claims: 0
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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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |