US3420510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for heating material
Assignee: Owens Corning
•
Filing: 1967-03-31
•
Granted: 1969-01-07
•
Expires: 1987-03-31
Abstract
No abstract record available.
Inventors
- 👤 Paul D Griem Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:54
CPC Classifications
C; C03; C03B; C03B7/00; C03B7/02; C03B7/06; C03B5/00; C03B5/16; C03B5/24; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1902; G05D23/1904; G05D23/1927; G05D23/193; G05D23/1932; G05D23/1934; G05D23/20; G05D23/22; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y10; Y10S; Y10S65/00; Y10S65/13
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2153922A
Cited
US3010657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |