US3363771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1966-08-03
•
Granted: 1968-01-16
•
Expires: 1986-08-03
Abstract
No abstract record available.
Inventors
- 👤 Theodore M Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/06; B01D33/073; B01D33/44; B01D33/48; B01D33/50; B01D33/506; B01D33/70; B01D33/72; B01D33/722; B01D33/727; B01D2201/00; B01D2201/28; B01D2201/282; B01D2201/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2076935A
Cited
US2614696A
Cited
US2939583A
Cited
US3241675A
Cited
US3241676A
Cited
US3262573A
Cited
US3152078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |