US2622487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indexing table
Assignee: ROBBINS ENGINEERING Co
•
Filing: 1947-12-23
•
Granted: 1952-12-23
•
Expires: 1967-12-23
Abstract
No abstract record available.
Inventors
- 👤 Russel A Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:43
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/04; B23Q16/06; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/5128; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305544; Y10T409/305656; Y10T409/30868; Y10T409/308792; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB539746A
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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) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |