US2771037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin cylinder spray pump
Assignee: John Blue Co Inc
•
Filing: 1952-06-11
•
Granted: 1956-11-20
•
Expires: 1972-06-11
Abstract
No abstract record available.
Inventors
- 👤 Johnston Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:52
CPC Classifications
F; F04; F04B; F04B53/00; F04B1/00; F04B1/02; F16; F16B; F16B2200/00; F16B2200/50; F16B2200/509
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2482229A
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US2500310A
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US2620739A
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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) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |