Patent US1109952A successfully refreshed from Google Patents.
US1109952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saw-guide for gas-pipes.
Assignee: Individual
•
Filing: 1914-04-13
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Granted: 1914-09-08
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Expires: 1934-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles H Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:00
CPC Classifications
B; B23; B23D; B23D51/00; B23D51/02; B23D51/025; B23D51/026; B25; B25B; B25B7/00; B25B7/02
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) | 1917-09-07 | 1918-03-09 | 1918-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-09-07 | 1922-03-09 | 1922-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-09-07 | 1926-03-09 | 1926-09-08 | $7700.00 | Window Closed / Lapsed |