US2821873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contouring tool
Assignee: American Radiator and Standard Sanitary Corp
•
Filing: 1953-04-30
•
Granted: 1958-02-04
•
Expires: 1973-04-30
Abstract
No abstract record available.
Inventors
- 👤 James D Alsman
- 👤 Harry A Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:38
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/08; B23B3/10; B23B29/00; B23B29/04; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/191; Y10T407/22; Y10T407/2208; Y10T407/221; Y10T82/00; Y10T82/14; Y10T82/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US84697A
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US440319A
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US475939A
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US707472A
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US945901A
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US1381550A
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US1492103A
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US1710462A
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US2250161A
Cited
US2540323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |