US3483664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing system
Assignee: Celotex Corp
•
Filing: 1967-04-19
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Granted: 1969-12-16
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Expires: 1987-04-19
Abstract
No abstract record available.
Inventors
- 👤 Smith A Funk
- 👤 Charles J Klasen
- 👤 James J Malone Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:20
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/16; E04D13/14; E04D13/1407; E04D13/1415; E04D5/00; E04D5/10; E04D5/12; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249987; Y10T428/249991; Y10T428/249992
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) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |