Patent US5568655A successfully refreshed from Google Patents.
Patent US2899702A successfully refreshed from Google Patents.
US2899702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1959-08-18
•
Expires: 1976-08-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:15
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/02; Y; Y10; Y10S; Y10S16/00; Y10S16/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183640A
Cited
GB189321587A
Cited
US1871030A
Cited
US2223045A
Cited
GB536268A
Cited
US2603818A
Cited
US2585625A
Cited
CH291453A
Cited
US2752627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |