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US2798424A
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Assignee: Equipment Dev Co Inc
•
Filing: 1955-04-14
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Granted: 1957-07-09
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Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Edmund G Smith
- 👤 Otell M Cocchiarella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:21
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/12; C02F11/121; C02F11/122; B; B01; B01D; B01D33/00; B01D33/06; B01D33/067; B01D33/44; B01D33/46; B01D33/466; B01D33/70; B01D33/76; B30; B30B; B30B9/00; B30B9/02; B30B9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |