Patent US2899542A successfully refreshed from Google Patents.
US2899542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
De mauro
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
2026-10-30 10:22
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/02; F21V; F21V17/00; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0876; Y10T292/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2636978A
Cited
US1263504A
Cited
US1900081A
Cited
US2414662A
Cited
US2639368A
Cited
US2694775A
Cited
US2744191A
Cited
US2767307A
Cited
US2792245A
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 |