US987909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallurgic apparatus.
Assignee: PEIRCE-SMITH CONVERTER Co
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Filing: 1909-11-29
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Granted: 1911-03-28
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Expires: 1929-11-29
Abstract
No abstract record available.
Inventors
- 👤 William H Peirce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
F; F16; F16H; F16H19/00; F16H19/02; F16H19/06; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18832
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) | 1914-03-27 | 1914-09-26 | 1915-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-03-27 | 1918-09-26 | 1919-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-03-27 | 1922-09-26 | 1923-03-28 | $7700.00 | Window Closed / Lapsed |