US2731297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically operated liquid sprayer
Assignee: Bjorksten Research Laboratories Inc
•
Filing: 1952-09-19
•
Granted: 1956-01-17
•
Expires: 1972-09-19
Abstract
No abstract record available.
Inventors
- 👤 Earl A Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/047; B05B11/00; B05B11/01; B05B11/02; B05B11/026; B05B11/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US103498A
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US382610A
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US1632559A
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US1743056A
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US1971450A
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US2177032A
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US2323341A
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US2618510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |