US3494727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbe resistant roof
Assignee: STANLEY L RAPAPORT
•
Filing: 1967-11-17
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Granted: 1970-02-10
•
Expires: 1987-11-17
Abstract
No abstract record available.
Inventors
- 👤 Stanley L Rapaport
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:31
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/14; E; E04; E04D; E04D13/00; E04D13/002; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815; Y10T428/8305
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) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |