US2654326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant delivery pump
Assignee: Milton Roy LLC
•
Filing: 1948-10-07
•
Granted: 1953-10-06
•
Expires: 1968-10-07
Abstract
No abstract record available.
Inventors
- 👤 Robert T Sheen
- 👤 Saalfrank Royal Bartlett
- 👤 John W Welker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:08
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/06; F04B49/00; F04B49/08; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/1828; Y10T74/18296
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US780130A
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US782597A
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US797742A
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US1005515A
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US1018483A
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US1766610A
Cited
US1748443A
Cited
US1795197A
Cited
FR679092A
Cited
US1910636A
Cited
US2263657A
Cited
US2349161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |