US1620255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular stone saw
Assignee: Individual
•
Filing: 1925-07-11
•
Granted: 1927-03-08
•
Expires: 1945-07-11
Abstract
No abstract record available.
Inventors
- 👤 John A Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:42
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041; B28D1/12; Y; Y10; Y10S; Y10S408/00; Y10S408/713; Y10T; Y10T408/00; Y10T408/81; Y10T408/89; Y10T408/895
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) | 1930-03-07 | 1930-09-06 | 1931-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-03-07 | 1934-09-06 | 1935-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-03-07 | 1938-09-06 | 1939-03-08 | $7700.00 | Window Closed / Lapsed |