US2980265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer crane
Assignee: STRUCTURAL CLAY PRODUCTS RES F
•
Filing: 1957-06-19
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Granted: 1961-04-18
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Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Paul V Johnson
- 👤 Robert B Taylor
- 👤 John P Dunne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:38
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/02; B65G57/16; B65G57/20; B65G57/22; B65G57/24; B65G57/245; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1510886A
Cited
US1860143A
Cited
US2729344A
Cited
US2795346A
Cited
US2716497A
Cited
US2789716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |