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US2867327A
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US
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Assignee: Individual
•
Filing: 1957-01-18
•
Granted: 1959-01-06
•
Expires: 1977-01-18
Abstract
No abstract record available.
Inventors
- 👤 Hirs Gene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:57
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/09; B01D29/096; B01D29/50; B01D29/52; B01D29/60; B01D29/606; B01D29/88; B01D29/90; B01D29/92; B01D35/00; B01D35/16; B01D37/00; B01D37/02; B01D37/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2603354A
Cited
US1288508A
Cited
US1853263A
Cited
US1870381A
Cited
US2232716A
Cited
US2494534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |