US3445004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescopic cantilevered boom
Assignee: NORTHWEST ENGINEERING Co A CORP OF
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Filing: 1967-02-01
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Granted: 1969-05-20
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Expires: 1987-02-01
Abstract
No abstract record available.
Inventors
- 👤 Lyle D Grider
- 👤 Gottfried Reuter
- 👤 George W Mork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:43
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/70; B66C23/701; B66C23/705
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US915143A
Cited
US3207044A
Cited
GB996853A
Cited
US3300060A
Cited
US3243052A
Cited
US3323660A
Cited
US3308967A
Cited
US3315821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |