Patent US3397646A successfully refreshed from Google Patents.
US3397646A
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Pulsed metering device
Assignee: WILLIAM C ALLSOPP JR
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Filing: 1966-05-31
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Granted: 1968-08-20
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Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Allsopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:33
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1238; G; G01; G01F; G01F11/00; G01F11/02; G01F11/08; G05; G05D; G05D11/00; G05D11/001; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T137/8593; Y10T137/86389; Y10T137/86405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |