US3468086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated roofing construction and method
Assignee: A C HATHORNE CO
•
Filing: 1968-04-09
•
Granted: 1969-09-23
•
Expires: 1988-04-09
Abstract
No abstract record available.
Inventors
- 👤 Walter J Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:49
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/35; E04D3/351; E04D3/352; E04D3/355; E04D3/358; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/1011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1849869A
Cited
US2120644A
Cited
US2303737A
Cited
US2913104A
Cited
US3111787A
Cited
US3121649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |