Patent US3540703A successfully refreshed from Google Patents.
US3540703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous lehr for the heat treatment of glass-based materials
Assignee: Ordena Trudovogo Krasnogo Znameni Zavod Avtosteklo
•
Filing: 1968-04-12
•
Granted: 1970-11-17
•
Expires: 1988-04-12
Abstract
No abstract record available.
Inventors
- 👤 Mikhail Ivanovich Kozmin
- 👤 Ivan Fedotovich Mashir
- 👤 Vasily Semenovich Bezbozhny
- 👤 Veniamin Matveevich Olomsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:08
CPC Classifications
C; C03; C03B; C03B32/00; C03B25/00; C03B25/04; C03B25/06; C03B25/08; C03B29/00; C03B29/04; C03B29/06; C03B29/08; C03B32/02
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |