Patent US892469A successfully refreshed from Google Patents.
US892469A
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Method of making tunnel-segments.
Assignee: ERNEST W MOIR
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Filing: 1906-04-26
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Granted: 1908-07-07
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Expires: 1926-04-26
Abstract
No abstract record available.
Inventors
- 👤 Frank F Vandevort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:46
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623
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) | 1911-07-07 | 1912-01-06 | 1912-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-07-07 | 1916-01-06 | 1916-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-07-07 | 1920-01-06 | 1920-07-07 | $7700.00 | Window Closed / Lapsed |