US2988189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-matic shift for fire pumps
Assignee: Waterous Co
•
Filing: 1958-04-28
•
Granted: 1961-06-13
•
Expires: 1978-04-28
Abstract
No abstract record available.
Inventors
- 👤 David F Thomas
- 👤 Robert A Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:27
CPC Classifications
F; F16; F16D; F16D27/00; F16D23/00; F16D23/12; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE130067C
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US132234A
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US655415A
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US2195908A
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US2195909A
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US2667251A
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US2373259A
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US2398407A
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US2649813A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |