US3232020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing
Assignee: Individual
•
Filing: 1962-04-16
•
Granted: 1966-02-01
•
Expires: 1982-04-16
Abstract
No abstract record available.
Inventors
- 👤 Donald M Gillis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:35
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/26; E04D1/265
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA464766A
Cited
US433500A
Cited
US113882A
Cited
DE245195C
Cited
US1723076A
Cited
US1978519A
Cited
US2232762A
Cited
US2232786A
Cited
US2285480A
Cited
US2568603A
Cited
US2659323A
Cited
US2730969A
Cited
US3015193A
Cited
US3110130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |