US1653848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making glass tubing
Assignee: Hartford Empire Co
•
Filing: 1925-03-21
•
Granted: 1927-12-27
•
Expires: 1945-03-21
Abstract
No abstract record available.
Inventors
- 👤 Sidney S Grotta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:33
CPC Classifications
C; C03; C03B; C03B17/00; C03B17/04; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/88; B29C48/90; B29C48/901; B29C48/903; B29C48/907; B29C48/10; B29C48/885; B29C48/908; B29C48/911; B29C48/9115; B29C48/912; B29C48/9135
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1930-12-26 | 1931-06-27 | 1931-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-12-26 | 1935-06-27 | 1935-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-12-26 | 1939-06-27 | 1939-12-27 | $7700.00 | Window Closed / Lapsed |