Patent US3521762A successfully refreshed from Google Patents.
US3521762A
Expired / Lapsed
US
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Bale stacking apparatus
Assignee: Individual
•
Filing: 1968-03-13
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Granted: 1970-07-28
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Expires: 1988-03-13
Abstract
No abstract record available.
Inventors
- 👤 James C Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:54
CPC Classifications
A; A01; A01D; A01D87/00; A01D87/12; A01D85/00; A01D85/005; A01D90/00; A01D90/02; A01D90/08; A01D2085/007; Y; Y10; Y10S; Y10S414/00; Y10S414/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2530341A
Cited
US2709014A
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US2870922A
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US3085696A
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US3164080A
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US3385456A
Cited
US3395814A
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US3406840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |