US3053520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate for columns for the exchange of materials
Assignee: Individual
•
Filing: 1958-07-31
•
Granted: 1962-09-11
•
Expires: 1978-07-31
Abstract
No abstract record available.
Inventors
- 👤 Streuber Hans-Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:28
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1882104A
Cited
US2077645A
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US2120256A
Cited
US2540781A
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US2690332A
Cited
US2699929A
Cited
US2855187A
Cited
US2917293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |