US2929503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air, water, and dirt eliminator and surge tank
Assignee: Individual
•
Filing: 1956-12-06
•
Granted: 1960-03-22
•
Expires: 1976-12-06
Abstract
No abstract record available.
Inventors
- 👤 Ii Watson Ambruster
- 👤 Jr Carl T Vance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:50
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/06; B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D17/08; B01D17/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US551324A
Cited
US812831A
Cited
GB155109A
Cited
US1651495A
Cited
US1873597A
Cited
US2555607A
Cited
US2611490A
Cited
US2601903A
Cited
US2609932A
Cited
US2597475A
Cited
US2657808A
Cited
US2837214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |