US2620734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant delivery pump
Assignee: Milton Roy LLC
•
Filing: 1948-05-15
•
Granted: 1952-12-09
•
Expires: 1968-05-15
Abstract
No abstract record available.
Inventors
- 👤 Saalfrank Royal Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:05
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/02; F04B1/00; F04B1/02; F04B1/04; F04B1/06; F04B11/00; F04B11/005; F04B11/0058; F04B11/0066; F04B49/00; F04B49/12; F04B9/04; F04B9/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US14089A
Cited
US41154A
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US943988A
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US1132284A
Cited
US1909955A
Cited
US2018975A
Cited
US2259587A
Cited
US2263429A
Cited
US2367893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |