US2899140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
hellyer
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
2026-10-23 10:14
CPC Classifications
B; B02; B02C; B02C13/00; A; A47; A47J; A47J43/00; A47J43/04; F; F25; F25C; F25C5/00; F25C5/02; F25C5/04; F25C5/046; Y; Y10; Y10S; Y10S241/00; Y10S241/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US411571A
Cited
US629262A
Cited
US1200384A
Cited
US1241935A
Cited
US1700819A
Cited
US2169684A
Cited
US2187102A
Cited
US2195363A
Cited
FR847456A
Cited
US2297604A
Cited
US2509242A
Cited
US2554888A
Cited
US2568203A
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 |