US3431828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag stacker
Assignee: FMC Corp
•
Filing: 1965-09-17
•
Granted: 1969-03-11
•
Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Donald C Crawford
- 👤 Veikko K Viitanen
- 👤 John D Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:46
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/38; B65H29/46; B65H2701/00; B65H2701/10; B65H2701/12; B65H2701/121; B65H2701/1212; B65H2701/19; B65H2701/191; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2033; Y10T83/2037; Y10T83/2057; Y10T83/2059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3064827A
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US3102632A
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US2971874A
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US3159122A
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US3183750A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |