US2630975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pressure muller
Assignee: Simpson Herbert Corp
•
Filing: 1949-11-22
•
Granted: 1953-03-10
•
Expires: 1969-11-22
Abstract
No abstract record available.
Inventors
- 👤 Horth Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:23
CPC Classifications
B; B02; B02C; B02C15/00; B02C15/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US557529A
Cited
US563145A
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US1021981A
Cited
US1031730A
Cited
US2377307A
Cited
US2464775A
Cited
US2461176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |