US2795236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum primer
Assignee: Waterous Co
•
Filing: 1954-10-18
•
Granted: 1957-06-11
•
Expires: 1974-10-18
Abstract
No abstract record available.
Inventors
- 👤 David F Thomas
- 👤 Robert A Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:12
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/04; F04D9/06; F04D9/065; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0166; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/7287; Y10T137/7329; Y10T137/7358; Y10T137/7439; Y10T137/7478
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1682331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |