US3064955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contacting column
Assignee: Shell USA Inc
•
Filing: 1960-03-17
•
Granted: 1962-11-20
•
Expires: 1980-03-17
Abstract
No abstract record available.
Inventors
- 👤 Clarence P Bouttc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:29
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/22; B01D3/32; B01D3/324; B01D3/326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR326117A
Cited
US1028157A
Cited
US1366958A
Cited
US1878467A
Cited
US1937486A
Cited
US2711308A
Cited
US2896928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |