Patent US1476632A successfully refreshed from Google Patents.
US1476632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing tubes
Assignee: FRETZ MOON TUBE Co
•
Filing: 1921-03-14
•
Granted: 1923-12-04
•
Expires: 1941-03-14
Abstract
No abstract record available.
Inventors
- 👤 John W Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:48
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08
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) | 1926-12-03 | 1927-06-04 | 1927-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-12-03 | 1931-06-04 | 1931-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-12-03 | 1935-06-04 | 1935-12-04 | $7700.00 | Window Closed / Lapsed |