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US3430771A
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Assignee: Individual
•
Filing: 1966-10-05
•
Granted: 1969-03-04
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Expires: 1986-10-05
Abstract
No abstract record available.
Inventors
- 👤 Elmer Dreher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:33
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/28; B; B01; B01D; B01D46/00; B01D46/0002; B01D46/0013; B01D46/10; B01D46/12; B01D46/121; B01D2265/00; B01D2265/02; B01D2265/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2754928A
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US2792906A
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US2836258A
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US2953824A
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US2935157A
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US3076303A
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US3142550A
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US3250063A
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US3293834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |