US3494111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: MILTON S HATHAWAY
•
Filing: 1967-06-02
•
Granted: 1970-02-10
•
Expires: 1987-06-02
Abstract
No abstract record available.
Inventors
- 👤 Milton S Hathaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:16
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/0002; B01D46/0005; F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; B01D2279/00; B01D2279/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1951384A
Cited
US2046093A
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US2496883A
Cited
GB777738A
Cited
GB928497A
Cited
US3002870A
Cited
US3167416A
Cited
US3266229A
Cited
US3355863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |