US3435950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Materials separation devices
Assignee: Individual
•
Filing: 1966-03-03
•
Granted: 1969-04-01
•
Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 Lew Suverkrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:12
CPC Classifications
A; A01; A01D; A01D33/00; A01D33/04; B; B07; B07C; B07C5/00; B07C5/02; B07C5/34; Y; Y10; Y10S; Y10S209/00; Y10S209/932
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR1227518A
Cited
US3052353A
Cited
US2980229A
Cited
US3137392A
Cited
US3070227A
Cited
US3209910A
Cited
US3355980A
Cited
US3351198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |