Patent US3478645A successfully refreshed from Google Patents.
US3478645A
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US
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Fluid powered timing devices
Assignee: Otis Engineering Corp
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Filing: 1967-05-24
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Granted: 1969-11-18
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Expires: 1987-05-24
Abstract
No abstract record available.
Inventors
- 👤 Carlos R Canalizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:12
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02; F15; F15B; F15B21/00; F15B21/02; F16; F16K; F16K31/00; F16K31/44; F16K31/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2621634A
Cited
US2769298A
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US2907550A
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US2935050A
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US2928423A
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US3064628A
Cited
US3166988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |