US2500540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapping machine
Assignee: CLEVELAND TAPPING MACHINE Co
•
Filing: 1945-01-11
•
Granted: 1950-03-14
•
Expires: 1965-01-11
Abstract
No abstract record available.
Inventors
- 👤 Graves Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:33
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/16; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/165; Y10T408/17; Y10T408/172; Y10T408/65; Y10T408/675; Y10T408/6757
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1809188A
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US2054018A
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US1994079A
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US2268078A
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US2257364A
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US2254032A
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US2368499A
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GB548432A
Cited
US2368359A
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US2327279A
Cited
US2376164A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |