Patent US2953248A successfully refreshed from Google Patents.
US2953248A
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Apparatus for clearing restricted orifice
Assignee: Bird Machine Co Inc
•
Filing: 1956-03-28
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Granted: 1960-09-20
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Expires: 1976-03-28
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Troland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/14; B04C5/15; B04C5/16; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7885; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86493; Y10T137/86815
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |