US2727634A
Expired / Lapsed
US
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Assignee: W M SPRINKMAN Corp
•
Filing: 1952-12-15
•
Granted: 1955-12-20
•
Expires: 1972-12-15
Abstract
No abstract record available.
Inventors
- 👤 James P O'meara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:33
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/88; B01D29/90; B01D29/92; B01D29/96
Claims Analysis
Total Claims: 0
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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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |