Patent US3524714A successfully refreshed from Google Patents.
US3524714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic bellows pump
Assignee: United States Department of the Air Force
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Filing: 1968-10-30
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Granted: 1970-08-18
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Expires: 1988-10-30
Abstract
No abstract record available.
Inventors
- 👤 Robert K Grove
- 👤 Carl J Rudey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:17
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/10; F04B43/113; F04B43/1136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US862867A
Cited
US1696825A
Cited
US2212667A
Cited
US2419993A
Cited
US2673525A
Cited
US2703055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |