US2647645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet stacking mechanism
Assignee: American Manufacturing Co Inc
•
Filing: 1949-06-06
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Granted: 1953-08-04
•
Expires: 1969-06-06
Abstract
No abstract record available.
Inventors
- 👤 Pierce Alfred Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:53
CPC Classifications
B; B30; B30B; B30B7/00; B30B7/02; B30B7/023; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/102; Y10S414/103; Y10S414/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1615813A
Cited
US1772734A
Cited
US2113926A
Cited
US2228887A
Cited
US2181357A
Cited
US2376176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |