Patent US3405805A successfully refreshed from Google Patents.
US3405805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: ROBERT F HATTER
•
Filing: 1966-12-19
•
Granted: 1968-10-15
•
Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 Robert F Hatter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:56
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/147; B01D29/00; B01D29/01; B01D29/05; B01D29/07; B01D29/072; B01D29/88; B01D29/92; B01D29/925; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7925
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1753809A
Cited
US2110009A
Cited
US2661846A
Cited
US2738879A
Cited
US2801006A
Cited
US2793752A
Cited
GB950810A
Cited
US3184062A
Cited
US3317045A
Cited
US3272342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |