US2902936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps for metering liquids
Assignee: Smiths Technologies Ltd
•
Filing: 1956-03-12
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Granted: 1959-09-08
•
Expires: 1976-03-12
Abstract
No abstract record available.
Inventors
- 👤 Bradley John Ramsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/067; F04B43/0009; F04B43/0081; F04B43/009; G; G01; G01F; G01F3/00; G01F3/02; G01F3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1771170A
Cited
US1101266A
Cited
US1680204A
Cited
FR673850A
Cited
US2691943A
Cited
US2764097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |