US2590007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid proportioning and spraying apparatus
Assignee: Individual
•
Filing: 1946-07-22
•
Granted: 1952-03-18
•
Expires: 1966-07-22
Abstract
No abstract record available.
Inventors
- 👤 Donald G Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:25
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B1/00; F04B1/04; F04B1/053; F04B13/00; F04B13/02; F04B53/00; F04B53/16; F04B53/162; F04B9/00; F04B9/08; F04B9/10; F04B9/103; F04B9/107; G; G05; G05D; G05D11/00; G05D11/02; G05D11/03; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |