US2658604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Worm feeder
Assignee: Bayer AG
•
Filing: 1951-02-21
•
Granted: 1953-11-10
•
Expires: 1971-02-21
Abstract
No abstract record available.
Inventors
- 👤 Erdmenger Rudolf
- 👤 Gassen Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:07
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US170104A
Cited
US1069404A
Cited
US1419946A
Cited
US1468379A
Cited
US2567219A
Cited
US2556392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |