US2536638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-lined pump
Assignee: Pfaudler Inc
•
Filing: 1946-06-01
•
Granted: 1951-01-02
•
Expires: 1966-06-01
Abstract
No abstract record available.
Inventors
- 👤 Otto W Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:13
CPC Classifications
F; F04; F04D; F04D7/00; F04D7/02; F04D7/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876515A
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US1600149A
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US1677119A
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US1791849A
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US1871747A
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US2091492A
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US2190670A
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US2347386A
Cited
US2283263A
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US2332150A
Cited
US2386898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |