US3520422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article stacker
Assignee: Rexnord Inc
•
Filing: 1968-10-25
•
Granted: 1970-07-14
•
Expires: 1988-10-25
Abstract
No abstract record available.
Inventors
- 👤 Roger K Bruce
- 👤 Robert S Waite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:30
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/02; B65G57/16; B65G57/20; B65G57/22; B65G57/24; B65G57/245; B65G57/03; B65G57/06; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/102; Y10S414/103; Y10S414/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1269115A
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US2686603A
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US3122241A
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US3130839A
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US3161302A
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US3142389A
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US3263827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |