US2871789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse pumps
Assignee: Chamberlain Corp
•
Filing: 1955-07-11
•
Granted: 1959-02-03
•
Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Desire A Kiffer
- 👤 Lawrence D Orser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:45
CPC Classifications
F; F04; F04B; F04B13/00; F04B13/02; F04B43/00; F04B43/02; F04B43/06; F04B43/067; F04B43/08; F04B43/10; F04B43/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1832257A
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US2088042A
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US2001971A
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US2036536A
Cited
DE577401C
Cited
US2046491A
Cited
US2085286A
Cited
US2047540A
Cited
US2317594A
Cited
US2322071A
Cited
US2395330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |