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US3416268A
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Swimming pool backwall forming method and structure
Assignee: DAWSON A JOHNSON
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Filing: 1966-03-24
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Granted: 1968-12-17
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Expires: 1986-03-24
Abstract
No abstract record available.
Inventors
- 👤 Dawson A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:20
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/0075; E04H4/0081; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US966119A
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US1009865A
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US2140978A
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US2309147A
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US2954645A
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US3024574A
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US3042278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |