US2636628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable unloader
Assignee: Individual
•
Filing: 1950-10-07
•
Granted: 1953-04-28
•
Expires: 1970-10-07
Abstract
No abstract record available.
Inventors
- 👤 Prang Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:01
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/16; B60P1/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US400270A
Cited
US710611A
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US725095A
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US897462A
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US1448835A
Cited
US1515329A
Cited
US2262404A
Cited
US2275799A
Cited
US2325492A
Cited
US2431000A
Cited
US2419824A
Cited
US2490241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |