US2798437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating pump
Assignee: Individual
•
Filing: 1953-12-02
•
Granted: 1957-07-09
•
Expires: 1973-12-02
Abstract
No abstract record available.
Inventors
- 👤 Rudolph H Sachtleber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/02; F04B9/04; F04B49/00; F04B49/08; Y; Y10; Y10T; Y10T74/00; Y10T74/16; Y10T74/1625; Y10T74/19; Y10T74/1956
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1682570A
Cited
DE517236C
Cited
US2221313A
Cited
FR53167E
Cited
US2555787A
Cited
US2553063A
Cited
US2657634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |