Patent US2633522A successfully refreshed from Google Patents.
US2633522A
Expired / Lapsed
US
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Device for heating glass pipe
Assignee: Individual
•
Filing: 1950-02-07
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Granted: 1953-03-31
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Expires: 1970-02-07
Abstract
No abstract record available.
Inventors
- 👤 Abram S Berg
- 👤 Arsenius N Goregliad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:21
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |