US2577927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arcuate-edged discharge opening for hopper, and an arcuate closure for said opening
Assignee: Individual
•
Filing: 1946-11-06
•
Granted: 1951-12-11
•
Expires: 1966-11-06
Abstract
No abstract record available.
Inventors
- 👤 Albert H Stockmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:56
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/0046; B28C7/0053; B28C7/0076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304463A
Cited
US1312705A
Cited
US1327708A
Cited
US1751230A
Cited
GB402933A
Cited
US2349476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |