Patent US3539340A successfully refreshed from Google Patents.
Patent US2899212A successfully refreshed from Google Patents.
US2899212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
mayer
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
•
Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:07
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/02; B62B1/04; B62B1/042; B62B2202/00; B62B2202/40; B62B2202/404
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1536903A
Cited
FR337647A
Cited
US1802437A
Cited
US2326482A
Cited
US2443847A
Cited
GB714363A
Cited
US2711152A
Cited
US2745673A
Cited
US2797927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |