US3421267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof expansion joint covers
Assignee: Central Specialties Co
•
Filing: 1966-11-03
•
Granted: 1969-01-14
•
Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 Claude P Balzer
- 👤 Edward M Corman
- 👤 Almer A Reiff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:09
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/14; E04D13/1407; E04D13/1415; E04D13/15; E04D13/151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2801601A
Cited
USRE25733E
Cited
US967626A
Cited
US1090158A
Cited
US1411882A
Cited
US2160758A
Cited
US3176806A
Cited
US3296762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |