Patent US3487911A successfully refreshed from Google Patents.
US3487911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for distributing loose material
Assignee: Individual
•
Filing: 1967-06-01
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Granted: 1970-01-06
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Expires: 1987-06-01
Abstract
No abstract record available.
Inventors
- 👤 Walter Wirz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:53
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/10; B27N3/14; B65; B65G; B65G69/00; B65G69/04; B65G69/0458; B65G2814/00; B65G2814/02; B65G2814/0241; B65G53/00; B65G53/34; B65G53/40; B65G53/46; B65G53/4608; B65G53/4625
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2131128A
Cited
US2750123A
Cited
US1113381A
Cited
US2212743A
Cited
US2526609A
Cited
US2676694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |