Patent US947727A successfully refreshed from Google Patents.
US947727A
Expired / Lapsed
US
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Apparatus for tapping couplings.
Assignee: National Tube Co
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Filing: 1909-02-25
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Granted: 1910-01-25
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Expires: 1929-02-25
Abstract
No abstract record available.
Inventors
- 👤 Jonathan H Baker
- 👤 David Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:35
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/16; B23G1/18; B23G1/185; Y; Y10; Y10S; Y10S425/00; Y10S425/218; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8588
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1913-01-24 | 1913-07-26 | 1914-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-01-24 | 1917-07-26 | 1918-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-01-24 | 1921-07-26 | 1922-01-25 | $7700.00 | Window Closed / Lapsed |