US2736144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
thatcher
Assignee: —
•
Filing: —
•
Granted: 1956-02-28
•
Expires: 1973-02-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:32
CPC Classifications
B; B24; B24B; B24B1/00; B24B1/04; Y; Y10; Y10S; Y10S82/00; Y10S82/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1399108A
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US1535411A
Cited
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Cited
DE524141C
Cited
US2092721A
Cited
US2168806A
Cited
US2402554A
Cited
GB493697A
Cited
US2333304A
Cited
GB542365A
Cited
US2324374A
Cited
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Cited
US2580716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |