US3539279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular pump
Assignee: H A Rider & Sons
•
Filing: 1968-09-23
•
Granted: 1970-11-10
•
Expires: 1988-09-23
Abstract
No abstract record available.
Inventors
- 👤 Allison L Rider
- 👤 Clinton H Rider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:36
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0057; F04C15/0076; F16; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/30; F16D3/32; F16D3/84; F16D3/843; F16D3/845; F16D1/00; F16D1/06; F16D1/08; F16D1/0894; F16D3/38; F16D3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2695694A
Cited
US2915979A
Cited
US2924180A
Cited
US3097609A
Cited
US3324801A
Cited
US3340814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |