US2881707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable pump
Assignee: Thompson Manufacturing Co Inc
•
Filing: 1954-06-01
•
Granted: 1959-04-14
•
Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 William M Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
F; F04; F04D; F04D3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191312101A
Cited
US1167047A
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FR518915A
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US1245806A
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US1554472A
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US1558417A
Cited
GB285531A
Cited
US1912575A
Cited
US2226180A
Cited
GB584395A
Cited
US2647366A
Cited
DE806635C
Cited
US2614501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |