Patent US2953248A successfully refreshed from Google Patents.
US2953248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for clearing restricted orifice
Assignee: Bird Machine Co Inc
•
Filing: 1956-03-28
•
Granted: 1960-09-20
•
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 11:20
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US301228A
Cited
US916268A
Cited
US2225840A
Cited
FR868952A
Cited
US2421977A
Cited
US2461741A
Cited
GB607785A
Cited
US2630920A
Cited
US2595737A
Cited
US2585509A
Cited
GB712792A
Cited
US2786642A
Cited
AT177277B
Cited
US2809567A
Cited
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 |