US2726671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulated tank control
Assignee: AERO SUPPLY Manufacturing CO Inc
•
Filing: 1954-08-18
•
Granted: 1955-12-13
•
Expires: 1974-08-18
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Zand
- 👤 Robert E Forrester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:38
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/04; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2322; Y10T137/2496; Y10T137/2514
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2169982A
Cited
US2509629A
Cited
US2585480A
Cited
US2621719A
Cited
US2684217A
Cited
US2672880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |