US3545894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pump
Assignee: Sternco Industries Inc
•
Filing: 1969-04-15
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Granted: 1970-12-08
•
Expires: 1989-04-15
Abstract
No abstract record available.
Inventors
- 👤 David D Lovitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:33
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/042; F; F04; F04B; F04B39/00; F04B39/10; F04B39/1046; F04B43/00; F04B43/0009; F04B43/0054; F04B45/00; F04B45/04; F04B45/047; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7886
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2169827A
Cited
US2809589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |